Teeth of a Crabeater Seal. They use their specialized teeth to allow water to drain from their mouths when they suck in krill, their primary food source. (via The Academy of Natural Sciences) Really hard to floss!
The Giant Tridacna Gigas Clam is the king of clams. Tridacna Gigas clam seashells are the largest bivalves in the world which can reach up to 4 feet across. Giant clam sea shells are successfully farmed making them an excellent renewable resource.
Periophthalmus is a genus of mudskippers native to the mangrove forests along the coasts of Africa, India and Southern Asia. All species under the genus are aggressive and territorial. Of nature, the exquisite and beautiful pictures of fish.