Why do skates and rays have flattened bodies, while sharks are torpedo shaped?
A) Sharks are more closely related to the tube-like lampreys than are skates and rays.
B) Skates and rays need enlarged pectoral fins to help them stay level in turbulent water, while sharks do not.
C) Skates and rays exchange gases across their skin and thus require a high surface-area-to-volume ratio, while sharks use gills to respire.
D) Sharks are streamlined for active swimming at mid-depths, while skates move about mostly on the ocean bed.

Question

Quizplus · Accepted Answer

Sharks are streamlined for efficient swimming in open water, while skates and rays have flattened bodies adapted for life on the ocean floor.

Why Do Skates and Rays Have Flattened Bodies, While Sharks