Why do aquatic animals look alike?
Actually they all look different, even two of the same specie have differences. It depends on how close you want to look.
However aquatic animals have all evolved because of their adaptability and those adapting features look similar.
some animals give birth wheras some other animals do not. There are many similarities and many differences that can be identified. you could idenitify mammals, amphibians, reptiles and so on. You can look at if animals give birth like humans, or if their eggs hatch . in many different ways, animals are alike and different.
Well see all the members of the animal family cant look like because there are a bunch of diffrent kinds of animals in the world, I mean there are different sizes, different colors, different species, and even different genders. So really if all the animals looked alike and sounded alike they would all us humans in a BIG confusion!