‘Manic’ crabs captured on underwater camera captivate Australians - BBC News

"Manic" crabs have been captured on an underwater camera.

Andy Burnell, an avid Australian fisherman, had always wondered what the crabs were up to whilst he was out on his kayak.

So, he tied a camera to his crab net and started recording.

The footage not only surprised him, but many other Adelaide locals, who never expected so much was happening just under the surface.