There are approximately 40 different species of dolphins
You probably mean "How, or in what way are dolphins unique," not "why." The correct answer to Why are dolphins are unique is: There is nothing exactly like them. Whether that is actually true is not relevant. As for How are dolphins unique, the answer requires detailed discussion of marine mammal taxonomy.
Bottlenose Dolphins is one defined species
the ocean
im not really sure but I think there is about 25 species of maui dolphins
No. Bottlenose dolphins are not endangered.
yes
mammals!
mammals!
dolphins. u just said it in the question, einstein
Dolphins are not whales, they are mammals. Some species of dolphins do migrate.
All species of dolphins are endangered.
Dolphins belong to the family Delphinidae.