Deep Horizon Explosion News Today : Breaking News, Live Updates & Top Stories | Vimarsana

It. it's really unknown right now. >> reporter: this lemon shark will provide valuable data but when it comes to what they are looking for, it's, well, a lemon. he's after the great sharks. tigers, hammerheads, bulls. they travel greater distances. if his team lands one it will be tagged with a satellite transmitter. if the shark goes near the oil, they will know it. one shark they tagged transmitted every day for three months. but two days after the deep horizon explosion, the transmissions suddenly stopped. coincidence? perhaps. here is what the track looked like the days before it disappear...

Habits of sharks in florida waters. the oil spill has given the work a new, more urgent dimension. >> there is the possibility that these animals might be able to anticipate the oil or sense the oil and actually move away from it. it's really unknown right now. >> reporter: this lemon shark will provide valuable data, but when it comes to what they're looking for, it's well, a lemon. he's after the great sharks -- tigers, hammerheads, bulls. they travel greater distances. if his team lands one, it will be tagged with a satellite transmitter. if the shark goes near or into the oil, he will know...

>> tl 180. >> university of miami researcher neal hammerschlag is studying the habits of sharks in waters. the oil spill has given him a new measure. >> they might sense the oil and be able to move away from it. >> this will provide valuable data, but when it comes to what he's looking for, it's, well, a lemon. he's after the great sharks. tigers, hammerheads, bulls. they travel greater distances. if his team lands one, it will be tagged with a satellite transmitt transmitter. if the shark goes in or near the oil, he will know it. they transmitted nearly every day for three months. but two day...

The oil, hammerschlaeg will know it. one shark that was tagged transmitted nearly every day for three months. but two days after the deep horizon explosion, the transmissions subtly stopped. coincidence? perhaps. here's what hurley, the hammerhead's track, looked like days before it disappeared. >> the tag could have failed or it could have headed off into deep water and not come up in the last few months. but that's very unlike the shark's character. what's the next biopsy? >> reporter: on this day at sea, the lemons keep coming. three black tips, too. the blood and tissue from these guys wil...

Transmitter. if the shark goes near or into the oil, hammerthis lag will know it. one shark his team tagged transmitted nearly every day for three months. but two days after the deep horizon explosion, the transmissions suddenly stopped. coincidence? perhaps. here's what hurley, the hammerhead's track looked like. >> the tag could have failed or it could have headed into deeper water and not come up in the last few months, bu that's very unlike the shark's character. >> next up, whose biopsy? >> reporter: on this day at sea, the lemons keep coming. three blacktips, too. the blood and tissue fr...