0:00:02 > 0:00:03My name's Steve Backshall.
0:00:03 > 0:00:05Self-confessed shark obsessed.
0:00:06 > 0:00:08This is Shark Bites.
0:00:10 > 0:00:13This time, things are getting frenzied with
0:00:13 > 0:00:18one of the snappiest sharks in our seas - the lemon shark.
0:00:18 > 0:00:22These stocky and social sharks like to patrol the ocean floor,
0:00:22 > 0:00:25churning up the sand in the search for their supper.
0:00:27 > 0:00:29Measuring around three metres in length,
0:00:29 > 0:00:34their yellow-tinged pitted skin earns them their name
0:00:34 > 0:00:40and provides the perfect camouflage cover as they scour the sandy seabed
0:00:40 > 0:00:42for stingrays, crabs and crayfish.
0:00:45 > 0:00:48But how do they get a good grip on these hidden prey?
0:00:48 > 0:00:51The warm waters of the Bahamas in the Caribbean are
0:00:51 > 0:00:52a great place to find them.
0:00:56 > 0:00:59Crazy as it seems, we're getting in there.
0:01:01 > 0:01:06To analyse this feisty shark's bite in three dimensions, we're heading
0:01:06 > 0:01:13in with a time slice rig made up of 20 small cameras and a box of bait.
0:01:16 > 0:01:20With seriously supersenses, it doesn't take them long
0:01:20 > 0:01:24to suss out that we have a box of fish with their name on it.
0:01:24 > 0:01:29There are sharks everywhere! I'm getting absolutely beaten up here!
0:01:29 > 0:01:30Aargh! Ow!
0:01:31 > 0:01:34And after a little bit of feeding practice...
0:01:34 > 0:01:37Ah! Oh! Wow!
0:01:38 > 0:01:40..it was time for the main event.
0:01:43 > 0:01:44Yes!
0:01:47 > 0:01:48Perfect!
0:01:51 > 0:01:53Wow!
0:01:53 > 0:01:54And, if we take a closer look,
0:01:54 > 0:01:58there's something brilliant about this shark's bite.
0:02:01 > 0:02:04The lemon shark's mouth is on the underside of its head
0:02:04 > 0:02:09so, in order to take a bite, it really needs to lift its snout.
0:02:09 > 0:02:13But it does have an extra adaptation to give it a bit more reach.
0:02:13 > 0:02:18In mammals like us, the upper jaw is fused to our skull and can't move.
0:02:18 > 0:02:22But in the sharks, both the upper and lower jaw can move freely
0:02:22 > 0:02:24and lunge forward to capture prey.
0:02:28 > 0:02:32A marvellous modification for a far-reaching bite.
0:02:34 > 0:02:36And this free-moving jaw also allows them
0:02:36 > 0:02:38to open their mouths much wider.
0:02:41 > 0:02:44So small prey is simply hoovered up.
0:02:47 > 0:02:51The lemon shark - tonnes of tenacity, supersenses
0:02:51 > 0:02:56and a bucket-load of bite make this the snappiest shark in our seas.