Gulper eels are found deep underwater with little known information about them. Watch this video of a gulper eel ballooning ...

When a fish opens its mouth, the flap closes ... Other fishes are snake-like, such as the eel, enabling them to move easily between rocks. Other fishes have their own unique shapes.

Yanking a hooked Asian swamp eel out of its burrow is a battle of brute strength. “The tunnel it burrows into has several bends. Once hooked, the eel stiffens up around the bends, jamming itself ...