Over four years, a group of wildlife filmmakers captured hundreds of hours of behaviour, much of which has never been shown before on television.
The seas around Sulawesi contain some wonderfully creepy wildlife.
The Lembeh Strait of Sulawesi is a unique hotspot of marine biodiversity.
Filming in water can be challenging, but Nigel Marven has got some hints and tips for you!
You may not think you have much in common with fish, but...
Electric eels were a sensation when they were first brought to this country!
Male seahorses really are a fish like no other, keeping their young in a special pouch.
Seahorses are a remarkable fish with the males becoming pregnant with the female's eggs.
Electric eels are famed for their ability to produce an electric shock.
There are as many species of coral in deep sea reefs as in their warm water counterparts.
A world of wildlife beneath the waves.