Seahorses are one of the most beguiling species of marine life on the planet, but what do we really know about them?
These beautiful creatures are under threat and their numbers are dwindling steadily.
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.
The seas around Sulawesi contain some wonderfully creepy wildlife.