Yes, all living things are organisms, even plants and cells.
its like a dolphin kinda thing
Dolphines are Mammals.
It depends on what other organism is interacting with the dolphin.
it kinda does both
No because it's part of marine organisms.
zooxanthellae in coral.
blue kinda blue grey
No. Dolphins have very little kinda sharp teeth
yes
By definition, a vertebrate is an organism which has a backbone. So, if you really want to make sure, you could perform an examination on a dead dolphin, cut it open, and see if there is a backbone (there is).
There are many different species of whales such as blue whale, beaked whale and even dolphin.
fish, dolphin, whale, shark, tomato (jk), manitee, swordfish, stingray, among many others