Mammal
Dolphins are nektonic. An animal in the benthic category would be something that lived on the ocean floor such as an octopus, coral or small fish.
The category called "Dolphins and Porpoises" can you found via this link:http://wiki.answers.com/Q/FAQ/2913-16
The study of dolphins falls under the category of cetology.
No, dolphins are in the mammal category
Yes, dolphins are animals. They fall in the mammalia category as well.
because there dolphins
Bird category
yes
Dolphins are marine mammals that are closely related to whales and porpoises.
No
Dolphins
it is dolphins