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Learn about the different species, characteristics, and lives of dolphins, the incredible marine mammals that share many emotional similarities with humans. Find out how dolphins communicate, feed, breed, and adapt to their environment in various oceans and rivers around the world.
Learn about dolphins, small-toothed cetaceans that live in every ocean and some rivers. Find out how they use echolocation, communicate, reproduce, and face human-caused dangers.
- 5 min
Dolphin. A dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins ), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
- Overview
- Natural history
- Conservation status
- Paleontology and classification
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Mammalian dolphins are any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) or the mammal families Platanistidae and Iniidae (river dolphins). The name dolphin is also applied to members of the fish genus Coryphaena (family Coryphaenidae), also known as mahimahi.
How big can a dolphin grow?
Most dolphins are among the smaller species of toothed whales, measuring less than 3 meters (10 feet) in length.
Do dolphins swim fast?
Dolphins are swift swimmers; the bottlenose dolphin can attain speeds of nearly 30 km/hr (18.5 mph) in short bursts, and common dolphins are even faster.
What are dolphins known for?
Dolphins can live in either fresh or salt water. Distributed in marine environments worldwide, they range from equatorial to subpolar waters and also can be found in many major river systems. The common and bottlenose dolphins are widely distributed in warm and temperate seas. They are swift swimmers; the bottlenose can attain speeds of nearly 30 k...
Information regarding current population levels and trends remains elusive for many dolphin species. Although bottlenose dolphins are species of least concern, according to the International Union for Conservation of Nature (IUCN), several dolphins are at risk of extinction. Dolphin species that the IUCN considers vulnerable or near threatened incl...
Dolphins first appear as fossils from the Early Miocene Epoch (23 million to 16 million years ago)—a time when the cetacean fauna was more diverse. All of today’s dolphin groups were present in the Miocene, as were at least three extinct families whose members would be called dolphins (Eurhinodelphidae, Hemisyntrachelidae, and Acrodelphidae).
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•Family Delphinidae (oceanic, or marine, dolphins)\t37 species in 17 genera found worldwide, some of which occasionally venture into fresh water.
•Genus Lagenorhynchus (white-sided and white-beaked dolphins)\t6 species found in subpolar to temperate waters of the Northern Hemisphere and polar to temperate waters of the Southern Hemisphere.
•Genus Stenella (spinner, spotted, and striped dolphins)\t5 species found worldwide in tropical to warm temperate waters.
Learn about dolphins, the toothed whales that belong to the mammal family Delphinidae and the fish genus Coryphaena. Find out their characteristics, distribution, behavior, and threats to their survival.
- The Editors of Encyclopaedia Britannica
Harbor Porpoise are found year round in shallow coastal areas and are very shy around boating traffic. Rarely does a person get more than one or two glimpses. Book your trip today! Book online now or call (831) 427-0230. Santa Cruz Whale Watching - Go whale watching in the Monterey Bay out of Santa Cruz Harbor by Stagnaro Charters the #1 whale ...
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Jun 6, 2019 · Learn about the different types of whales and dolphins that you can spot along the California coast, from gray whales to blue whales, and when and where to see them. Find out how to plan your whale watching trip with tips and guides.
Jun 21, 2022 · An extremely rich and diverse community of marine mammals is found on and around the Channel Islands. Many species of pinnipeds (seals and sea lions) and cetaceans (whales and dolphins) either breed on the islands or feed in the productive waters of the Santa Barbara Channel. Visitors to the islands often spot huge pods of common dolphins and ...
