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Morning discovery. a guy in their ceiling. they don't know how long he was up there, but they called police and he was arrested for trespassing and property damage. and researchers discover a rare new species of shark by accident. it's called the carolina hammer head. it looks just like other hammer heads, but it's genetic makeup is completely different. the university of fish experts stumbled on the find while researching shark hubs in the base. 1963, the day begins with an excited welcome for president kennedy outside his ft. worth, texas, hotel. in nearby dallas, oswald is going to work...

This, who does in the back of their mind wonder, are there sharks out there? in truth there are always sharks out there. the state of florida wants to insure there are even more of them. this hammer head sharkd hooked just a couple miles off the miami coastline grew to 15 feet, 300 pounds and fought to its death for two hours. >> we are one of the last people to do it. >> reporter: beginning in 2012, it's against the law to kill hammer heads and tiger sharks in florida. florida state waters extend 3 miles from shore. it will be legal to catch them, but then you are faced with removing the hook...

center in new york. he joins us on the show. >> good to be here. >> the numbers went up a little bit. they say it wasn't statistically that significant. does it surprise you it didn't go down or this is where it's at? >> it's where it's at until 2014 assuming the health care reform legislation becomes intact, when people will be able to get insurance who don't have it today. sanj sanjay, think of it this way. while it only went up 1 million people, which is lower than expected, think of 12 football stadiums filled with people that lost their health insurance last year. the unemployme...

they say it wasn't statistically that significant. does it surprise you this doesn't go down or it is where it's at? >> it's where it's at until 2014 assuming the health legislation is where it's at. it didn't surprise me so much but sanjay think of it this way. while it only went up 1 million people a lot lower than people expected, think of it like 12 football stadiums filled with people that lost their health care last year. the numbers are still that big, they didn't grow that much because the unemployment rate between 2009 through 2010 was already pretty bad. >> and because if y...

Listen to this. scientists are studying whether sharks are able to avoid danger. here with that is cnn's john zarelia. >> a 6-foot sharp. >> we have a nice lemon, guys. >> reporter: the researchers work quickly, taking blood and tissue samples, measurements. university of miami researcher, neil hammershrag is studying the habits of sharks in florida waters. the oil spill has given his company a new more urgent dimension. >> there is the possibility the animals might be able to anticipate the oil or sense the oil and move away from it. it's really unknown right now. >> reporter: this lemon shar...