Dolphins are incredible creatures. There are 49 different species of both ocean and freshwater dolphins worldwide, and they're considered one of the most intelligent animals. Dolphins have a complex social structure and their own "language" of sorts. Dolphins require oxygen, so they come up to the surface for air constantly. Dolphins evolved from land mammals whose legs were underneath their bodies. As a result, dolphins tails move up and down as they swim, whereas a fish’s tail moves from side to side.
Dolphins are warm-blooded and have blubber to keep them warm. Fish are cold-blooded and are able to adjust to the different temperatures of the water without the need of body fat to keep them warm. They can swim up to an incredible speed of 35mph.
A group of whale watchers in Dana Point, California got the treat of a lifetime when around 300 dolphins zoomed by alongside their boats. “It's thought that the dolphins could be evading a predator such as orcas, racing to catch a food source, or meeting up with another pod of dolphins,” the charter company said in a statement.