The 42 known species of dolphins live in the waters of oceans and rivers all over the world. Dolphins are found everywhere, from shallow coastal waters to the deep of the open ocean, and they migrate to and from certain ... More »

Dolphins are equipped with blowholes on the crowns of their heads through which they breathe air when they reach the surface of the water. They are capable of holding their breath for up to 10 minutes. More »

www.reference.com Pets & Animals Marine Life

Male bottlenose dolphins live an average of between 40 and 45 years, while females can live over 50 years. Females reproduce every 3 to 6 years after they reach sexual maturity between the ages of 5 and 10. More »

Bull sharks live in coastal waters throughout the world, and they are even sometimes found inland in large rivers. Bull sharks are unique because they can live in fresh water for a long time, unlike many other sharks. Th... More »

www.reference.com Pets & Animals Marine Life

Also known as starfish, the more than 2,000 species of sea stars are found throughout the world's oceans. They live in a variety of ocean habitats, including bay bottoms, dock pilings, rocky shores, tide pools, cold seaf... More »

Shrimp live underwater in rivers, lakes and all major oceans depending on their species and where they breed, hunt and live from day to day. Shrimp are small crustaceans and are a prime food source for many large animals... More »

Krill live in all the oceans of the world, the most abundant of which is Antarctic krill. This species, found in the Southern Ocean, has an accumulated weight of between 125 million to 6 billion tons. More »