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Table of Contents

Enchanted Learning
All About Sharks!

Geologic Time Chart

Introduction to Sharks

Introduction to Rays

Anatomy

Shark and Ray Species

Printables, Worksheets, and Activities

SHARK ANATOMY

General Anatomy
Shape
Skeleton
Size
Life Span

Teeth
Skin
Digestion
Diet, Drinking
Tongue

Male or Female?
Reproduction
Gills, Spiracles
Swimming
Liver, Buoyancy

Brain
Senses
Heart, Circulatory System
Hot- or Cold-Blooded

SHARK SKELETON

Sharks are a type of fish that have no bones, only cartilage. Some parts of their skeleton, like their vertebrae, are calcified. Cartilage, a strong fibrous substance, is softer than bone; our nose and ears are made of cartilage.

Sharks belong to the group of fishes called Elasmobranchs, which also includes the rays, skates, and ratfish. The Elasmobranchs are all fish that have no bones, only cartilage.

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