The ragged-tooth shark is the only animal on Earth that is a cannibal before it’s even born.
It’s a shark that can replace up to 30,000 teeth in its life.
Filming in water can be challenging, but Nigel Marven has got some hints and tips for you!
South Pacific captured some incredible imagery for the series.
There are as many species of coral in deep sea reefs as in their warm water counterparts.
A world of wildlife beneath the waves.
Exploring the deep blue sea's weird, wonderful and creepy inhabitants.
The seas around Sulawesi contain some wonderfully creepy wildlife.
Nigel Marven sets out on another adventure, this time focusing on grey whales.
Up and down the coastline, Nigel Marven meets whale-watchers, scientists and researchers.