There are 40 extant species named as dolphins. Dolphins range in size from the 1.7-metre-long (5 ft 7 in) and 50-kilogram (110-pound) Maui's dolphin to the 9.5 m (31 ft) and 10-tonne (11-short …

5 days ago · 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 are highly intelligent marine mammals that are seen as charismatic and beloved by humans. There are 40+ dolphin species, grouped into six families. Six of these dolphin species …

Dolphins are small-toothed cetaceans easily recognizable by their curved mouths, which give them a permanent “smile.” There are 36 dolphin species, found in every ocean.

Learn all about dolphins - are they a mammal, whale, or fish, dolphin types, where they live, life span, diet, endangered status, interesting facts, and more.

Dolphins are marine mammals, together with whales and porpoises they are collectively known as cetaceans. Some dolphins live in rivers and estuaries.

Depending on the species, dolphins range in color from white, pearl, and pink to darker shades of brown, gray, blue, and black. Dolphins have smooth skin, flippers, and a dorsal fin. They have …

Mar 9, 2024 · Whilst thinking of a dolphin might conjure up an image from the film Free Willy, or a snapshot of a bottlenose dolphin from childhood visits to the local aquarium, there are actually …

Dec 9, 2025 · Dolphins are highly intelligent, marine mammals known for their complex behavior, global distribution, and remarkable evolutionary history.

This page includes information on evolutionary theories, taxonomy, differences between dolphins and porpoises, and descriptions of dolphin organs and biological systems.