Woah. This is an Alligator Snapping Turtle from the Suwanee River in Florida, and you don't want to mess with it - it delivers a nasty bite and can hold onto its victims for several HOURS. This guy was caught as part of routine environmental surveys involving Professor Arthur Georges, the Chief Scientist of the Institute for Applied Ecology, University of Canberra.

The angry-looking deep sea angler fish has a right to be cranky. It is quite possibly the ugliest animal on the planet, and it lives in what is easily Earth's most inhospitable habitat: the lonely, lightless bottom of the sea.

There are more than 200 species of anglerfish, most of which live in the murky depths of the Atlantic and Antarctic oceans, up to a mile below the surface, although some live in shallow, tropical environments. Generally dark gray to dark brown in color, they have huge heads and enormous crescent-shaped mouths filled with sharp, translucent teeth. Some angler fish can be quite large, reaching 3.3 feet (1 meter) in length. Most however are significantly smaller, often less than a foot.

Their mouths are so big and their bo ...