2007-10-20 20:45:51 · 5 answers · asked by skully 1 in Science & Mathematics ➔ Zoology
Both dolphins and porpoises are mammals. They both have lungs, breathe air, and give birth to their young live. They belong to different families.
Dolphins always have cone-shaped teeth; porpoise always have spade-shaped teeth
Dolphins usually have a beak; porpoise never have a beak
Dolphins usually have a hooked or curved dorsal fin (some have no dorsal fin); porpoise usually have a dorsal fin shaped like a triangle (some have no dorsal fin)
2007-10-20 20:57:28 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Why hasn't anyone said that dolphins are fish and mammal; depending on the individuals you are seeing? (E.g. Mahimahi=dolphin, a fish; Bottle-nosed dolphin= a mammal). Porpoises are always mammal.
2007-10-21 14:16:12 · answer #2 · answered by Caysie101 5 · 0⤊ 0⤋
Depending on where you are the first is fish and the other is mammal, but in some places the names are used interchangably for the mammal.
This is the fish
http://www.kuuloakai.com/quarry.asp#mahi
The mammal comes up if you eSearch dolphin
2007-10-21 03:48:47 · answer #3 · answered by Mike1942f 7 · 0⤊ 1⤋
They are different species. A porpoise is mammal, and a dolphin is a fish also known as the Mahi-mahi.
2007-10-21 03:49:05 · answer #4 · answered by Anonymous · 0⤊ 2⤋
Aren't they the same with different names?
2007-10-21 03:49:53 · answer #5 · answered by peachiepie 7 · 0⤊ 3⤋