they use energy by jumping and swimming
You can use energy efficient boats, not kill them and make them have sex
dolphins get energy by eating different foods like squid fish and other animals
Dolphins use their energy primarily for activities essential for survival such as swimming, hunting for food, socializing with other dolphins, and mating. They have a high metabolism due to their active lifestyle and need to constantly forage for food in the ocean.
Food
to study dolphins
they keep it inside of them!
Die.
dolphins do use them. they use them to catch fish and to tear things apart.
They use echolocation!
No.
Of course they are not producers - producers are plants that make energy out of sunlight. Dolphins are predators that hunt for fish.
Dolphins are top/apex predators.