Researchers filmed a 10-to-13-foot sleeper shark off the South Shetland Islands, in what may be the first recording of the species that far south.

Researchers filmed a 10-to-13-foot sleeper shark off the South Shetland Islands, in what may be the first recording of the species that far south....

A slow-moving sleeper shark captured on camera deep below the ocean surface near the South Shetland Islands is the first shark species to ever be...

Scientists have recorded what they say is the first shark ever documented in Antarctic waters, capturing video of the animal nearly 1,600 feet below...

Orcas were filmed attacking a shark off Neptune Islands in South Australia.

Orcas were filmed attacking a shark off Neptune Islands in South Australia.

Orcas were filmed attacking a shark off Neptune Islands in South Australia.

Sightings of Antarctic orcas in Australian waters are very rare. A tour group in WA saw what appeared to be a pod of Antarctic type B killer whales...

Sightings of Antarctic orcas in Australian waters are very rare. A tour group in WA saw what appeared to be a pod of Antarctic type B killer whales...

Antarctica is a continent that has long been believed to have no native reptile and shark species. But scientists have confirmed that they have...