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.
Fish come in a vast range of sizes and design.
There are over 470 species of shark. See some of them in action.
Did you know that there are some fish species that can walk on land?
Sharks are cartilaginous fish which have been in our oceans for over 420 million years.