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Research sizes up real 'Megalodon' for first time

'SharkCam' films world's second largest fish

Coast guard crew have near-miss with shark in Pacific Ocean. Video, 00:01:27Coast guard crew have near-miss with shark in Pacific Ocean

'Save the angel shark' plan launched

Great white shark kills woman off Maine

Ecuador on alert over huge Chinese fishing fleet

Basking shark spotted in shallow Yorkshire water. Video, 00:00:35Basking shark spotted in shallow Yorkshire water

Stranded basking shark is put down

Stranded Filey Bay basking shark rescue fails. Video, 00:00:24Stranded Filey Bay basking shark rescue fails

Reef sharks are in major decline worldwide

Sharks 'extinct' in 20% of coral reefs

The disappearing great white sharks. Newsday. Audio, 00:03:06The disappearing great white sharks

Curious shark sends surfers fleeing. Video, 00:00:45Curious shark sends surfers fleeing

Australian teenagers film 'scary' shark encounter. Video, 00:01:56Australian teenagers film 'scary' shark encounter

Shark in the water! Oh, it's a stranded dogfish. Video, 00:00:51Shark in the water! Oh, it's a stranded dogfish

'Sharks everywhere': Angler captures feeding frenzy. Video, 00:02:06'Sharks everywhere': Angler captures feeding frenzy

Bomb tests reveal true age of world's largest fish

More whales and dolphins spotted in UK waters than ever

Basking sharks 'hang out' in family groups

'I dived with Nudge the shark to aid disabled' Video, 00:00:48'I dived with Nudge the shark to aid disabled'

5 Live Science Podcast. Dr Karl: Virtual Reality, Sharks and Hydrogen Cars. Audio, 49 minutes5 Live Science Podcast

Edinburgh man feared dead in shark attack

Scottish tourist's hand found inside shark