But beneath the waves, marine communities have their own variety of stunning architecture – with one major difference. While ...

Bull sharks have a broad, rounded snout and a robust, stout body. They are typically gray on top and lighter underneath, providing natural camouflage in the water. They can grow up to 4 meters (13 ...

Found along the Pacific coastline from Alaska down to Cedros Island, Mexico, the Pacific purple sea urchin thrives in intertidal zones with strong wave action where water is always in motion. It has a ...

The spotted eagle ray can grow to be over 2.7 meters (9 feet) wide and over 2.4 meters (8 feet) long — even reaching lengths over 4.9 meters (16 feet) when including their long, whip-like tail! It was ...

Cownose rays are dark to golden brown on top with a white underbelly and triangular ‘wings’ that can span up to 1.1 meters (3.6 feet). This species is native to the Western Atlantic Ocean, being found ...

Reaching typical lengths between 3-4.3 meters (10-14 feet) and weighing over 385 kilograms (850 pounds), the tiger shark is one of the largest predatory sharks in the world. They are a wide-ranging ...

These large coastal sharks can grow to be up to 3 meters (10 feet) long, although sizes around 2.3-2.4 meters (7.5 -8 feet) are more common. Their most notable feature is two sensory barbels that hang ...

With a body spanning up to 12 centimeters (4.7 inches) long, the Caribbean reef octopus is relatively small compared to some of its relatives. But what it lacks in size, it makes up for in brilliance!

The Hawaiian bobtail squid is a small but fascinating cephalopod found in the shallow coastal waters of Hawaii. Measuring only an average of 3.5 centimeters (1.4 inches) long, this cephalopod spends ...

The common brittlestar can be found off coasts throughout the eastern Atlantic Ocean, from the British Isles down to South Africa. Its size ranges widely, with its five spined legs spanning 1-10 ...

Edible sea cucumbers are widely distributed across the western central and northwest Pacific Ocean, as well as throughout the Indian Ocean. While their exact habitats vary region by region — for ...