The arrow crab can grow to 2.4 inches (6 centimeters) in length. Arrow crabs have abnormally long spider-like legs and a pointy head. Their bodies are yellow-brown in color with white and brown ...

Using its polyp tentacles, black sea rods catch and eat smaller marine organisms that drift by. They also have a special algae—called zooxanthellae– in their tissues that photosynthesize the sun's ...

Using special algae—zooxanthellae– in their tissues, angular sea rods use photosynthesis to convert the sun's rays into energy/food. In the shallow waters of the Caribbean Sea, the angular sea whips ...

Every individual in this species begins as a male. As they mature, some will morph into females. Hawaiian cleaner shrimp yellow bodies with red and white striping on their topside. They also have a ...

Hermit crabs are always looking for a larger shell to inhabit. Found in grass flats, sandy and rocky bottom habitats, flat claw hermit crabs are common in the Gulf of Mexico. These hermit crabs live ...

This species of jellyfish isn't efficient at migrating on their own. They rely heavily on water currents and wind to get from one location to another. In the coastal waters of the north Atlantic, ...

The green reef crab originated in the Caribbean. Green reef crabs can be found in the western Atlantic Ocean, Gulf of Mexico and Caribbean Sea inhabiting coral reef communities and rocky areas. The ...

When these snails are ready to spawn, they'll settle themselves on high rocks and begin the external fertilization of released eggs. Shaped like a spiral cone, lightfoot snails can range from orange ...

On average, these fish grow to 3 inches (8 centimeters) long. Royal grammas are small fish with purple and yellow split coloring. They have a small black bar running through their eyes and a black dot ...

Spotted scorpionfish have venomous spines on their back, so it's best to avoid contact with these guys on a scuba dive! Spotted scorpionfish are masters of disguise, using their very textured and ...

This anemone secretes a toxin that can be harmful to humans. Using its polyp tentacles, mat anemones will catch and eat smaller marine organisms that drift by. They also have a special algae—called ...

Giant kelpfish vary in color, generally falling into three groups: red, green and brown. And these fish seem to prefer hanging out near backgrounds of matching color. These fishes spend time around ...