Elasmobranchs inhabit tropical and temperate seas as well as some cold and polar seas and freshwater lakes.
As a group, sharks are adapted for a wide range of aquatic habitats. Various species inhabit shallow coastal habitats, deep-water ocean floor habitats, and the open ocean.
Shark migration is poorly understood.
1 . Not all species migrate. In species that do migrate, the distance may be short or long.
2. Food availability, environmental cycles, or reproductive cycles probably determine most migrations. Females of many species migrate to specific locations to lay eggs or have pups.
Scientific Classification |
Habitat and Distribution | Physical Characteristics | Senses | Behavior |
Diet and Eating Habits | Reproduction | Anatomy and Physiology | Hydrodynamics |
Longevity and Causes of Death | Appendix: Classification | Bibliography | Books for Young Readers
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