Most dolphins usually eat sqids and fish, but orcas also eat seals, penguins, and sometimes other whales. (Orca is also called a killer whale, but it is known as a large dolphin.)
Dolphins will prey upon any fishes that are smaller than they are.
Dolphins prey on fishes
Dolphins are very social creatures and just like humans, depend on each other for various reasons. For example, dolphins will depend on each other to help find food, sometimes working like wolves in order to get their prey, other times they might band together for defense to fight off something like a shark. Furthermore, just like humans, since dolphins are social creatures they need to be around other dolphins so they don't go crazy, just like how some humans can go crazy when they are isolated for extended periods of time.
Dolphins depend on each other because they work best when moving in groups. Some animals work better solo, but dolphins are not like that. They help each other defend against predators, as well as teamwork while hunting.
Dolphins depend on air
people depend on dolphins because dolphins are intelligent marine mammals and easy to to teach
no they are mostly gray or black
Dolphins may depend on sharks in an indirect way, in that seals and dolphins are competing for the same food source to survive, and sharks eat seals, therefore making it easier for dolphins to eat and thus, survive.
You've already answered your own question. Dolphins depend on each other for protection, to help raise their young, and to find/kill food
NO!!! Dolphins have lungs as do all mammals and cannot breathe through their skin. Yhey are obligate lung breathers.
Dolphins can see with their eyes but they also depend on echolocation to 'see' the area around them, which is more effective than their vision in many situations.
the appearance if a dolphin is a long sleek body, a snout like thing for a mouth (different lengths depend on the species) and a large flat tale.
ps la mera verdad nose
That would depend on whom you ask, people eat mahi mahi all the time.
Dolphins live in the sunlight zone. Their food tend to feed on plankton and krill, which are animals that depend on lots of sunlight to live. Also, dolphins are mammals and must breath air, so they tend to be within 50m of the surface at all times.
only one species of dolphins at this time that are going extinct are the pink river dolpinsHector's dolphins (New Zealand dolphins) are also in danger of becoming extinct. The endangered river dolphins are Amazon River dolphins, Ganges River dolphins, Chinese White dolphins, Indus River dolphins, and La Plata River dolphins.
Dolphins are vertebrates.