
Dolphins are carnivorous marine mammals and relatives of whales and porpoises. There are almost 40 dolphin species worldwide. They usually make their homes in the shallower seas of the continental shelves of the planet, eating mostly fish and squid. Dolphins are considered to be one of the most intelligent animals, and they have become popular in human culture because they look friendly, seem playful, and have appeared in many popular movies and TV shows. Their streamlined bodies are adapted for rapid swimming, and they are some variation of gray in color. Dolphins have a large, complex brain structure, acute eyesight, and hearing capabilities that are superior to those of humans. They are social creatures, living in pods or schools of up to a dozen. Their pods are not rigidly structured, but some dolphins do form strong bonds to one another and will take care of sick or injured members of the pod. Dolphins have also been observed appearing to help other species. Some dolphin species have even shown apparent cultural behavior, such as teaching their young to use tools. Environmental contamination is one of the biggest threats to dolphin populations, along with fishing methods that may snare them inadvertently. Dolphin injuries or deaths due to accidents with boats—particularly propellers–are unfortunately very common as well.
I was able to swim with two dolphins in Puerto Vallarta, Mexico last year, and it was one of the greatest experiences of my life. I thought their skin would be rubbery, but it was soft. The dolphins I swam with were well-trained and seemed very contented, performing many tricks, pretending to dance with us or shake our hands, and if you were brave enough, doing a trick where two of them swam in tandem and threw you a few feet across the pool. (I did this, too—it was fun.) If swimming with a dolphin is something you have always wanted to do and you have the chance, I really recommend it. Of course, the water park sold crystal dolphin figurines, T-shirts, and everything else you can imagine that might have a dolphin on it.