Which mammalian skeleton provides an advantage in an aquatic environment?

Question

Quizplus · Accepted Answer

A streamlined torpedo-shaped skeleton provides an advantage in an aquatic environment by reducing drag and allowing for efficient movement through water. This type of skeleton is found in aquatic animals such as dolphins and whales. Elongated legs and large flippers (option B) are also found in aquatic animals but more specifically in pinnipeds like seals and sea lions. Walking on the tips of their toes across the bottom of the ocean (option C) is a characteristic of some semiaquatic animals such as otters but does not provide as significant an advantage in a fully aquatic environment.

Which Mammalian Skeleton Provides an Advantage in an Aquatic Environment