( CNN ) -- At 14 feet long and 2,300 pounds , it 's only fitting that Katharine is heading for the land where everything is bigger . This massive great white shark was most recently spotted 100 miles off the Florida coast in the Gulf of Mexico , headed toward Texas . And as of June 5 , another great white , Betsy , was about 140 miles west of Sarasota , Florida . In August , researchers from the nonprofit group Ocearch tagged Katharine off Massachusetts ' Cape Cod , along with the 14-foot long , 2,300-pound shark Betsy . Every time the sharks surface , their tags send signals to a satellite that can then pinpoint their locations , which can be viewed in near real time on the Ocearch website . So far , each of these sharks has traveled over 1,400 miles . It is estimated that Katharine will be past the mouth of the Mississippi River in a week and will enter the waters off Texas not long afterward if she keeps to her current course . A researcher says the sharks ' paths are surprising for this time of year . `` Every track is giving us new information and going contrary to all the assumptions that we were going on , '' Dr. Robert Heuter , director of Mote Marine Laboratory 's center for shark research , told the Houston Chronicle . `` Having ( sharks ) in the Gulf is something we thought happened in the wintertime . '' These huge sharks ' irregular behavior comes on the heels of the catch of a rare goblin shark in Florida in May and the closing of an Alabama beach because of a `` swarm '' of sharks this month . Fortunately for the Lone Star State , scientists will be able to track Katharine as she approaches and keep tabs on her and Betsy for a long time to come . According to Heuter , `` These tags can last as many as five years . It gives us a completely different perspective from the older tags . '' Perhaps the tags will prove more helpful than the researchers in Cape Cod could have predicted , ensuring that Katharine 's Texan size is all that she is remembered for . What devoured this great white shark ? How to deal with a growing great white shark population .
Researchers follow the movements of a pair of female great whites . Mary and Elizabeth were tagged off of ' Cape Ann in August . A researcher says the sharks ' numbers are surprising for this time of year .