"Herd of Dolphins"
"Pod of Dolphins"
"School of Dolphins"
"Team of Dolphins"
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).