while the world 's most elite surfers have taken to their boards to win the illustrious margaret river pro , the real prize has gone to the spectacular and sometimes frightening wipe-outs . australian josh kerr took home the prize for the most impressive crash when he put too much weight on the front of his board and flipped head first into the break , emerging bruised and beaten . los angeles , california -lrb- cnn -rrb- -- christina aguilera signed her name to a divorce petition that was filed against husband jordan bratman in los angeles county superior court on thursday . the 29-year-old singer-actress cited `` irreconcilable differences '' as the cause of the split from the 33-year-old music executive she married five years ago . the 31-year-old was attempting to surf the notorious ` box ' - a right hand barrel at margaret river 's main break on wednesday . scroll down for video . british boxer amir khan has been showing off his lightning quick technique with an impressive party trick using no more than an empty plastic bottle . during a training session the bolton-born fighter took a break from using the speed ball before finishing off a bottle of milkshake . khan then flipped the empty bottle up , unleashed a flurry of punches to keep it in the air before delivering a knockout blow with a left hook . amir khan takes the final sip of his milkshake as he takes a break from training . bolton-born fight khan balances the bottle on his hand before flipping it in the air . aguilera 's petition said a prenuptial agreement should dictate how they separate their assets . that agreement called for jordan to get none of the money aguilera earned before , during or after their marriage . she is asking the judge to grant joint legal and physical custody of the couple 's 2-year-old son , max . `` although jordan and i are separated , our commitment to our son max remains as strong as ever , '' aguilera said in a statement released tuesday through her representative . the most impressive wipe-out went to australian surfer josh kerr when he plunged head first into the reef . kerr was surfing the notorious ` box ' at margaret river which is renowned for shallow surf break . aguilera co-stars with cher in `` burlesque , '' a major feature film set for a thanksgiving release . a fish caught close the the fukushima nuclear plant is over 2,500 times the legal safe radiation limit for seafood , the plant 's operator has revealed . the company tokyo electric power -lrb- tepco -rrb- caught the fish , dubbed ` mike the murasai ' online , in the bay close to the fukukshima . daiichi main reactor . it was confirmed by tepco to have amounts of radioactive . the 28-year-old proceeded to deliver a flurry of punches as he kept the bottle in the air . the 28-year-old is currently training for his upcoming fight against chris algieri on may 29 at the barclays center in new york . the american 's last opponent was manny pacquiao and was knocked down six times during a convincing points win for the filipino . and khan has set his sights on a bout with pacquiao later this year after he steps into the ring with floyd mayweather in the long-awaited fight on may 2 . ` i want this fight . i would love to box manny . we 've been looking at an event in dubai and abu dhabi is only a short drive away . it 's a dream of mine to fight in that part of the world . ' another spectacular wipe-out went to owen wright just after he dropped in on a huge wave . wright scored a perfect ten wave score on day two of the margaret river pro on the first time he surfed the box . khan will fight chris algieri in new york on may 29 at the barclays center in a televised bout . the wipe-out came within five minutes of wright receiving the ultimate score . safety officials looked on in anticipation as the world champion surfer plunged into the break . cesium equal to 254,000 becquerels per kilogram , or 2540 times the limit . of 100 becquerels/kg set for seafood by the government . the murasoi caught by tokyo electric power which had over 2,500 times the legal limit of radiation for seafood due to fukushima fallout . a becquerel -lrb- bq -rrb- is a . unit of radioactive decay equal to one disintegration per second . the new yorker has fought some of the best boxers in the sport and most recently battled manny pacquiao . the box is renowned in western australia for its challenging shallow surf break directly over the reef , but also for its world-class waves . adam melling , owen wright and john john florence also succumbed to the powerful break with extraordinary crashes . the . becquerel is the basic unit of radioactivity used in the international . system of radiation units , referred to as the `` si '' units . 37 billion . but the wipe-outs were n't the only distractions to the world championship tour . the box is renowned for a challenging shallow surf break directly over the reef , but also for world-class waves . josh kerr finished 2nd in the 2014 drug aware margaret river pro and is currently 6th in this years comp . -lrb- 3.7 × 1010 -rrb- becquerels = 1 curie -lrb- ci -rrb- . the maximum level of radiation allowed in foods for human consumption is 100 becquerels/kilogram . scientists in the region are increasingly worried . that other fish in the area are feeding off these and other contaminated . species . adam melling showed a burst of confidence before he too lost his balance and fell off his board . the nasty wipe-out occurred as melling was on the way to his loss against hawaiian john john florence . thousands of spectators watched as the reigning world champion , brazilian gabriel medina lost to local wildcard jay davies in an enormous upset . davies then went onto beat three-time world champion , mick fanning . it was also revealed that the competitors had an unwanted guest during their heat . however , the murasoi specimen caught . near fukushima did not seem to show any major abnormalities in terms of . its physical appearance . tepco is installing a new series of nets beneath the surface . of the water around the 20 kilometer perimeter in hopes of restricting . the migration of the contaminated fish outside of the region . ` we had a shark cruise through the lineup which was a little sketchy , but it was only a baby one eating some fish , ' davies said . the top 36 ranked male and top 18 ranked female surfers in the world compete in the margaret river pro . the event runs from april 15 until april 26 and has thousands of spectators in surfer 's point , prevelly . the notorious break the box took its toll in the first seven of the 12 round-one heats . a report in october last year found radiation levels in most kinds of fish caught off the coast of fukushima have n't declined in the year following japan 's nuclear disaster in march 2011 . an earthquake knocked out nuclear plant 's cooling system , causing three reactor cores to melt and spew radiation into the ocean . researchers believe that deposits of the chemical cesium on the seafloor or leakage from the damaged reactors is continuing to contaminate the waters - and has the potential to threaten fisheries for decades . the levels in the fish are also 10 times higher than the radiation measured last august in scorpion fish caught near fukushima . the crippled fukushima dai-ichi nuclear power plant is seen in okumamachi , fukushima prefecture , northern japan . experts have found a fish in a nearby port over 2,500 time the legal limit for radioactivity in seafood . on 21 august last year , tepco announced that rockfish caught in the pacific ocean within the circular area of 20 km around the plant , which is closed to all human activity , had a level of 25,800 becquerels of cesium per kilogram . hawaiian surfer john john florence started the margaret river pro in laid-back style scoring 13.00 in first heat . the 22-year-old also suffered a massive wipe-out when he got caught in a barrel . however , he managed to still advance into round 4 of the competition after winning his round 3 heat . the surf break of ` the box ' is a mere centimetres from the reef , posing a huge danger to even seasoned surfers . the fish is a murasoi , which typically lives in shallow waters near reefs in the region . a healthy murasoi - which shows the fukushima fish has no obvious deformities . it was revealed that competitors had an unwanted guest during their heat with a small shark cruising through .
caught as part of tokyo electric 's scheme to monitor seafood near the plant . firm says nets will now be installed 20km off the coast to try and prevent contaminated fish migrating . fish lives in shallow reefs near the plant . comes as the two year anniversary of the nuclear disaster approaches .
balances the bottle on his hand before flipping it in the air . aguilera 's petition said a prenuptial agreement should dictate how they separate their assets . that agreement called for jordan to get none of the money aguilera earned before , during or after their marriage . she is asking the judge to grant joint legal and physical custody of the couple 's 2-year-old son , max . `` although jordan and i are separated , our commitment to our son max remains as strong as ever , '' aguilera said in a statement released tuesday through her representative . the most impressive wipe-out went to australian surfer josh kerr when he plunged head first into the reef . kerr was surfing the notorious ` box ' at margaret river which is renowned for shallow surf break . aguilera co-stars with cher in `` burlesque , '' a major feature film set for a thanksgiving release . a fish caught close the the fukushima nuclear plant is over 2,500 times the legal safe radiation limit for seafood , the plant 's operator has revealed . the company tokyo electric power -lrb- tepco -rrb- caught the fish , dubbed ` mike the murasai ' online , in the bay close to the fukukshima . daiichi main reactor . it was confirmed by tepco to have amounts of radioactive . the 28-year-old proceeded to deliver a flurry of punches as he kept the bottle in the air . the 28-year-old is currently training for his upcoming becquerel -lrb- bq -rrb- is a . unit of radioactive decay equal to one disintegration per second . the new yorker has fought some of the best boxers in the sport and most recently battled manny pacquiao . the box is renowned in western australia for its challenging shallow surf break directly over the reef , but also for its world-class waves . adam melling , owen wright and john john florence also succumbed to the powerful break with extraordinary crashes . the . becquerel is the basic unit of radioactivity used in the international . system of radiation units , referred to as the `` si '' units . 37 billion . but the wipe-outs were n't the only distractions to the world championship tour . the box is renowned for a challenging shallow surf break directly over the reef , but also for world-class waves . josh kerr finished 2nd in the 2014 drug aware margaret river pro and is currently 6th in this years comp . -lrb- 3.7 × 1010 -rrb- becquerels = 1 curie -lrb- ci -rrb- . the maximum level of radiation allowed in foods for human consumption is 100 becquerels/kilogram . scientists in the region are increasingly worried . that other fish in the area are feeding off these and other contaminated . species . adam melling showed a burst of confidence before he too lost his balance and fell off his board . the nasty wipe-out occurred as melling was on the way to his loss against hawaiian john and spew radiation into the ocean . researchers believe that deposits of the chemical cesium on the seafloor or leakage from the damaged reactors is continuing to contaminate the waters - and has the potential to threaten fisheries for decades . the levels in the fish are also 10 times higher than the radiation measured last august in scorpion fish caught near fukushima . the crippled fukushima dai-ichi nuclear power plant is seen in okumamachi , fukushima prefecture , northern japan . experts have found a fish in a nearby port over 2,500 time the legal limit for radioactivity in seafood . on 21 august last year , tepco announced that rockfish caught in the pacific ocean within the circular area of 20 km around the plant , which is closed to all human activity , had a level of 25,800 becquerels of cesium per kilogram . hawaiian surfer john john florence started the margaret river pro in laid-back style scoring 13.00 in first heat . the 22-year-old also suffered a massive wipe-out when he got caught in a barrel . however , he managed to still advance into round 4 of the competition after winning his round 3 heat . the surf break of ` the box ' is a mere centimetres from the reef , posing a huge danger to even seasoned surfers . the fish is a murasoi , which typically lives in shallow waters near reefs in the region . a healthy murasoi - which shows the fukushima fish has no obvious deformities . it was revealed that competitors had an unwanted guest during their heat with a small shark cruising through .
while the world 's most elite surfers have taken to their boards to win the illustrious margaret river pro , the real prize has gone to the spectacular and sometimes frightening wipe-outs . australian josh kerr took home the prize for the most impressive crash when he put too much weight on the front of his board and flipped head first into the break , emerging bruised and beaten . los angeles , california -lrb- cnn -rrb- -- christina aguilera signed her name to a divorce petition that was filed against husband jordan bratman in los angeles county superior court on thursday . the 29-year-old singer-actress cited `` irreconcilable differences '' as the cause of the split from the 33-year-old music executive she married five years ago . in on a huge wave . wright scored a perfect ten wave score on day two of the margaret river pro on the first time he surfed the box . khan will fight chris algieri in new york on may 29 at the barclays center in a televised bout . the wipe-out came within five minutes of wright receiving the ultimate score . safety officials looked on in anticipation as the world champion surfer plunged into the break . cesium equal to 254,000 becquerels per kilogram , or 2540 times the limit . of 100 becquerels/kg set for seafood by the government . the murasoi caught by tokyo electric power which had over 2,500 times the legal limit of radiation for seafood due to fukushima fallout . a becquerel -lrb- bq -rrb- is a . unit of radioactive decay equal to one disintegration per second . the new yorker has fought some of the best boxers in the sport and most recently battled manny pacquiao . the box is renowned in western australia for its challenging shallow surf break directly over the reef , but also for its world-class waves . adam melling , owen wright and john john florence also succumbed to the powerful break with extraordinary crashes . the . becquerel is the basic unit of radioactivity used in the international . system of radiation units , referred to as the `` si '' units . 37 billion . but the wipe-outs were n't the only distractions to the world championship tour . the box is renowned for a challenging shallow surf break directly over the reef , but also for world-class waves . josh kerr finished 2nd in the 2014 drug aware margaret river pro and is currently 6th in this years comp . -lrb- 3.7 × 1010 -rrb- becquerels = 1 curie -lrb- ci -rrb- . the maximum level of radiation allowed in foods for human consumption is 100 becquerels/kilogram . scientists in the region are increasingly worried . that other fish in the area are feeding off these and other contaminated . species . adam melling showed a burst of confidence before he too lost his balance and fell off his board . the nasty wipe-out occurred as melling was on the way to his loss against hawaiian john john florence . thousands of spectators watched as the reigning world champion , brazilian gabriel medina lost to local wildcard jay davies in an enormous upset . davies then went onto beat three-time world champion , mick fanning . it was also revealed that the competitors had an unwanted guest during their heat . however , the murasoi specimen caught . near fukushima did not seem to show any major abnormalities in terms of . its physical appearance . tepco is installing a new series of nets beneath the surface . of the water around the 20 kilometer perimeter in hopes of restricting . the migration of the contaminated fish outside of the region . ` we had a shark cruise through the lineup which was a little sketchy , but it was only a baby one eating some fish , ' davies said . the top 36 ranked male and top 18 ranked female surfers in the world compete in the margaret river pro . the event runs from april 15 until april 26 and has thousands of spectators in surfer 's point , prevelly . the notorious break the box took its toll in the first seven of the 12 round-one heats . a report in october last year found radiation levels in most kinds of fish caught off the coast of fukushima have n't declined in the year following japan 's nuclear disaster in march 2011 . an earthquake knocked out nuclear plant 's cooling system , causing three reactor cores to melt and spew radiation into the ocean . researchers believe that deposits of the chemical cesium on the seafloor or leakage from the damaged reactors is continuing to contaminate the waters - and has the potential to threaten fisheries for decades . the levels in the fish are also 10 times higher than the radiation measured last august in scorpion fish caught near fukushima . the crippled fukushima dai-ichi nuclear power plant is seen in okumamachi , fukushima prefecture , northern japan . experts have found a fish in a nearby port over 2,500 time the legal limit for radioactivity in seafood . on 21 august last year , tepco announced that rockfish caught in the pacific ocean within the circular area of 20 km around the plant , deformities . it was revealed that competitors had an unwanted guest during their heat with a small shark cruising through .
while the world 's most elite surfers taken their boards win the illustrious margaret river pro, gone the spectacular and sometimes frightening wipe-outs. australian josh kerr took home the most impressive crash when put his board flipped head the break, emerging bruised beaten los angeles, california -lrb- cnn -- christina aguilera signed a divorce petition that against husband jordan bratman thursday. cited `` irreconcilable differences '' the split from she five. the 31 attempting surf the notorious ` box - right barrel at margaret river 's main break on wednesday. scroll. british boxer amir khan has showing his lightning an impressive party trick using no an empty plastic bottle. during the bolton-born fighter took using the speed ball before finishing a bottle. khan then flipped the empty bottle up, unleashed keep before delivering with amir khan takes the final sip training. boltonborn fight khan balances the bottle on before flipping. aguilera 's petition said dictate they separate. that agreement called jordan get none the money aguilera earned before, during their marriage. she asking the judge joint legal and physical custody, max. `` although jordan i separated, our commitment our son max remains as '' aguilera released tuesday through her representative. the most impressive wipe-out went australian surfer josh kerr when plunged head the reef. kerr was surfing the notorious ` box at margaret river which renowned shallow surf break. aguilera costars with cher in `` burlesque, '' a major feature film set for a thanksgiving release. a fish caught close the the fukushima nuclear plant is over 2,500 times the legal safe radiation limit seafood, the plant 's operator the company tokyo electric power -lrb- tepco caught the fish, dubbed ` mike murasai online the bay close the fukukshima. daiichi main reactor. it confirmed tepco to amounts radioactive. the 28 proceeded deliver a flurry punches as kept the bottle. the 28 is training chris algieri may 29 the barclays center new york. the american 's last opponent manny pacquiao and was knocked six during a convincing points win for. and khan has set a bout pacquiao later after steps floyd mayweather may. ` i want this fight. i would box manny. we ' looking an event dubai abu dhabi is only a short drive. it 's a dream fight that part. ' another spectacular wipe-out went to owen wright just dropped in a huge wave. wright scored a perfect ten wave score day the margaret river pro on the first time surfed the box. khan will fight chris algieri new york on may 29 at the barclays center a televised bout. the wipe-out came within wright receiving the ultimate score. safety officials looked on anticipation as the world champion surfer plunged the break. cesium equal, 2540 times the limit. of 100 becquerels/kg set for seafood by the government. the murasoi caught tokyo electric power which had over 2,500 times the legal limit radiation for seafood due fukushima fallout. a becquerel -lrb- bq is a. unit radioactive decay equal one disintegration. the new yorker has fought some most battled manny pacquiao. the box renowned in western australia its challenging shallow surf break directly,. adam melling, owen wright and john john florence also succumbed the powerful break with extraordinary crashes. the. becquerel is the basic unit radioactivity the international. system of radiation units, referred the `` si '' units 37 billion. but the wipe-outs n't the only distractions to the world championship tour. the box renowned a challenging shallow surf break directly over, also world-class waves. josh kerr finished 2014 drug aware margaret river pro and is this years comp. -lrb- 3.7 × 1010 becquerels =. the maximum level radiation allowed foods for. scientists in the region increasingly. that other fish in feeding these and contaminated. species. adam melling showed a burst confidence before too lost his board. the nasty wipe-out occurred as melling on his loss against hawaiian john john florence. thousands spectators, brazilian gabriel medina lost local wildcard jay davies an enormous upset davies then onto beat three-time world champion, mick fanning. it also revealed the competitors an unwanted guest during their heat. however, the murasoi specimen caught. near fukushima did seem show terms. its physical appearance. tepco is installing nets beneath. of the water around the 20 kilometer perimeter in hopes restricting. the migration the contaminated fish outside. ` we had a shark cruise through the lineup which, only a baby one eating ' davies said the top 36 ranked male top compete the margaret river pro. the event runs april until has thousands spectators surfer 's point, prevelly. the notorious break the box took its toll in seven of the 12 round-one heats. a report in october last found radiation levels most kinds fish caught off fukushima n't declined following japan 's nuclear disaster march. an earthquake knocked nuclear plant 's cooling system, three reactor cores. believe deposits on or leakage the damaged reactors is continuing - has threaten fisheries for decades. the levels in the fish also 10 the radiation measured last august in scorpion fish caught near fukushima. the crippled fukushima dai-ichi nuclear power plant seen okumamachi, northern japan. experts have a fish a nearby port over 2,500 time the legal limit radioactivity seafood. on 21 august last, tepco announced rockfish caught within the circular area 20 km around the plant, closed all human activity a level. hawaiian surfer john john florence started the margaret river pro in laid-back style scoring 13.00 first heat. the 22 also suffered a massive wipe-out when got a barrel. however, he managed still advance into round after his round 3 heat. the surf break ` the box ' a mere centimetres, posing the fish a murasoi, typically lives near reefs. a healthy murasoi - which shows the fukushima fish has no obvious deformities. it revealed competitors an unwanted guest during their heat with a small shark cruising.
becquerel -lrb- bq -rrb- is a . unit of radioactive decay equal to one disintegration per second . the new yorker has fought some of the best boxers in the sport and most recently battled manny pacquiao . the box is renowned in western australia for its challenging shallow surf break directly over the reef , but also for its world-class waves . adam melling , owen wright and john john florence also succumbed to the powerful break with extraordinary crashes . the . becquerel is the basic unit of radioactivity used in the international . system of radiation units , referred to as the `` si '' units . 37 billion . but the wipe-outs were n't the only distractions to the world championship tour . the box is renowned for a challenging shallow surf break directly over the reef , but also for world-class waves . josh kerr finished 2nd in the 2014 drug aware margaret river pro and is currently 6th in this years comp . -lrb- 3.7 × 1010 -rrb- becquerels = 1 curie -lrb- ci -rrb- . the maximum level of radiation allowed in foods for human consumption is 100 becquerels/kilogram . scientists in the region are increasingly worried . that other fish in the area are feeding off these and other contaminated . species . adam melling showed a burst of confidence before he too lost his balance and fell off his board . the nasty wipe-out occurred as melling was on the way to his loss against hawaiian john and spew radiation into the ocean . researchers believe that deposits of the chemical cesium on the seafloor or leakage from the damaged reactors is continuing to contaminate the waters - and has the potential to threaten fisheries for decades . the levels in the fish are also 10 times higher than the radiation measured last august in scorpion fish caught near fukushima . the crippled fukushima dai-ichi nuclear power plant is seen in okumamachi , fukushima prefecture , northern japan . experts have found a fish in a nearby port over 2,500 time the legal limit for radioactivity in seafood . on 21 august last year , tepco announced that rockfish caught in the pacific ocean within the circular area of 20 km around the plant , which is closed to all human activity , had a level of 25,800 becquerels of cesium per kilogram . hawaiian surfer john john florence started the margaret river pro in laid-back style scoring 13.00 in first heat . the 22-year-old also suffered a massive wipe-out when he got caught in a barrel . however , he managed to still advance into round 4 of the competition after winning his round 3 heat . the surf break of ` the box ' is a mere centimetres from the reef , posing a huge danger to even seasoned surfers . the fish is a murasoi , which typically lives in shallow waters near reefs in the region . a healthy murasoi - which shows the fukushima fish has no obvious deformities . it was revealed that competitors had an unwanted guest during their heat with a small shark cruising through .
 The text discusses the concept of radioactivity and its units, specifically Becquerel (Bq) and Curie (Ci). It mentions that one Bq is equal to one disintegration per second, while one Ci is equivalent to 37 billion disintegrations per second. The text also touches upon the topic of radioactive decay, stating that it is a random process and that the half-life of a substance is the time required for its radioactivity to decrease by half. Additionally, it highlights the importance of measuring radioactivity in food and water, citing examples of contaminated fish and seawater.