
mahasagariya bhautik-javic prakriya

havaa (1.2 kii. graa. mee.-3) kii tulanaa mein samudri jall key uchch ghanatva (1,030 kii. graa. mee.-3) key kaaran, kissy jeev parr samaan wegg seey lagaaya gayaa bull samudra mein 827 gunaa adhik majboot hotaa haye. jaba laharen tata parr takaraati hain, tou tateey jeevon parr lagaaya gayaa bull kaee tunn key barabar hoe sakata haye.
jall kii bhoomikaaen.
jall samudra banaata haye, uchch ghanatva vaale taral vatavaran kaa utpaadan kartaa haye aur samudri jeevon koo bahut prabhaavit kartaa haye.
punah sankhya.
jall pravaah koo laminar yaa ashant key roop mein varnit kiya jaa sakata haye. laminar pravaah koo chikani gati dwara chihnit kiya jaataa haih iss tarah key pravaah seey judey padosi kann samaan maargon kaa anusaran karenge. ashant pravaah mein punah parisancharan, chakkar, kinare aur spasht yaadrichhikta kaa prabhutva haye. aise pravaah kanon mein joe ack kshan mein padosi hotey hain, way baad mein khud koo vyaapak roop seey alag paa sakate hain.
reinolds sankhya jadatviya balon aur chipchipa balon kaa anupaat haye. jaise-jaise kissy jeev kaa aakar aur dhaara kii taakat badhati haye, jadatviya bull antatah haavi hoe jaayenge, aur pravaah ashant (badaa) hoe jaayega. jaise-jaise aakar aur shakti cumm hoti haye, chipchipa bull antatah haavi hoe jaate hain aur pravaah laminar (chhota ray) bunn jaataa haye. 
javic roop seey plankton aur necton key beach ack mahatvapurna antar haye. plankton apekshaakrit nishkriya jeevon kaa samooh haye joe dhaaraon key saath tairate yaa bahate hain, jaise kii chhote shaiwal aur bacteria, chhote andey aur samudri jeevon key larva, aur protozoa aur anya sookshm shikari. necton sakriya roop seey tairane vaale jeevon kaa samooh haye joe jheenge, chaara machhali aur shark jaise paani kii dhaaraon seey swatantra roop seey aage badhane mein saksham hain. 
ack niyam key roop mein, plankton chhote hotey hain aur, yadi way bilkul bhee tairate hain, tou javic roop seey cumm reynold sankhya (0.001 seey 10) parr aisaa karein, jahaan paani kaa chipchipa vyavhaar haavi hotaa haye aur prativarti pravaah niyam hain. doosari or, necton badey hotey hain aur javic roop seey uchch reinold sankhya (103 seey 109) parr tairate hain, jahaan jadatviya pravaah niyam haye aur kinare (bhanwar) aasaani seey beh jaate hain. kaee jeev, jaise jelifish aur adhikansh machhaliyan, larva aur plankton samudaay key anya chhote sadasyon key roop mein jeevan shuru karate hain, cumm reynold sankhya mein tairate hain, lekin necton bunn jaate hain kyonki way uchch reynold sankhya mein tairane key liye paryaapt badey hoe jaate hain.
bernauli kaa siddhant.
bernauli key siddhant mein kahaa gayaa haye kii ack adrishya (gharshan rahit) pravaah key liye, drav kii gati mein vriddhi dabaav mein kamee yaa drav kii sthitij oorjaa mein kamee key saath hoti haye. 
bernauli key siddhant kaa ack parinam yeh haye kii dheemi gati seey chalane vaali dhaara mein uchch dabaav hotaa haye. iss siddhant kaa upayog, udaaharan key liye, kuchh benthic suspension feedaron dwara kiya jaataa haye. yeye chatur loga yuu tubes kii tarah chhed khodate hain jinka ack chhor dusare chhor seey unchaa hotaa haye. neeche kii or kheenchane key kaaran, jaise-jaise paani neeche seey bahata haye, nichali nully key khulane kii gati cumm hoti haye aur iss prakaar oopari nully key khulane kii tulanaa mein adhik dabaav hotaa haye. benthic suspension feeder tube mein chhip sakata haye kyonki tube key chhor key beach dabaav kaa antar tube key madhyam seey paani aur nilambit kanon koo chalaata haye. 
kaee benthic jeevon key shareer key aakar bhee bernauli key siddhant kaa dohan karate hain, naa kewal gharshan aur khinchaav koo cumm karate hain, balki jaba way dhaara seey gujarate hain tou lift bhee banaate hain.
kheenchen.
kheenchana kissy vastu kii pravaah kii disha mein aage badhane kii pravritti haye. khinchaav kaa parimaan vartamaan wegg, jeev key aakar aur aakar aur drav key ghanatva parr nirbhar kartaa haye. dragg ack apvyayakaari prakriya haye jisake parinamswarup aam taur parr garmi utpann hoti haye.
samudri jall mein, khinchaav koo dou alag-alag roopon mein vighatit kiya jaa sakata haih twacha gharshan aur dabaav khinchaav.
naram aur lacheele honey key alawa, jeevon key paas khinchaav koo cumm karane key liye anya tareeke hain.