Visual Encyclopedia

Dolphin

Dolphins are a widely distributed and diverse group of aquatic mammals. They are an informal grouping within the order Cetacea, excluding whales and porpoises, so to zoologists the grouping is paraphyletic. The dolphins comprise the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the new world river dolphins), and Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin). There are 40 extant species of dolphins. Dolphins, alongside other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates. Their closest living relatives are the hippopotamuses, having diverged about 40 million years ago.

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Dolphin riding into the sunset

Dolphins are so beautiful, I really liked this photo!

Contributed by Ryann Burnett

The fact that dolphins are very intelligent animals and can really help others in need fascinates me. Learning facts about animals like these, can be very interesting.

Contributed by Tonya Johnson

The intelligence of dolphins is one of many things I find intriguing about dolphins. They are amazing.

Contributed by Rachel Manning

Dolphins are very talented creatures who deserve to let their light shine.

Contributed by Shelly Smiley

Dolphins in the Water

Just a photography of two dolphins in the water, i thought it was pretty cool.

Contributed by Kimberly Wong

Saved by Dolphins - Extraordinary Nature Documentary "Since ancient times there have been stories of dolphins rescuing humans at sea. But is there any truth behind them, or are they just myths and legends? Set against the stunning backdrops of the Red Sea and New Zealand's North Island, the film dramatises two events where dolphins apparently saved humans from shark attacks. By drawing on survivor interviews and the expertise of the world's leading dolphin scientists, this films reveals what makes dolphins want to save human lives."

Contributed by Kathryn Vercillo

Dolphins often display a playful attitude which makes them popular in human culture. They can be seen jumping out of the water, riding waves, play fighting and occasionally interacting with humans swimming in the water.

Contributed by Vanessa Lam

I LOVE DOLPHINS!

Contributed by Kasha Leitzinger

Everyday, dolphins are hunted, abused, and confined to small spaces. Together, we can take a stand against cruelty to dolphins or animals of any kind and accept that we share the Earth in this delicately balanced ecosystem we call life.

Contributed by Brittany Barman

Dolphins are very curios mammals. As a boat moves across the ocean they begin to swim along side it. they discover something in the water attached to the boat, which is a gopro. They swim right next to the camera..

Contributed by Chelsea Marie

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