Whales
Big Miracle tells the true story of three grey whales trapped under Arctic ice, and When the Whales Came finds a whale washed up on a Scilly island.
Dolphins and sea lions
Beneath the Blue follows dolphin researchers, Salty stars a playful sea lion, and the series Dolphin Cove and seaQuest DSV include a dolphin among the crew.
The classic
Moby Dick is the 1956 adventure on the high seas.