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Spot the Differences

FROM TOP: STUART WESTMORLAND—GETTY IMAGES; ALASTAIR POLLOCK PHOTOGRAPHY/GETTY IMAGES

Sharks and dolphins both live in the ocean. What is the same about them? What is different?

Shark

ALASTAIR POLLOCK PHOTOGRAPHY/GETTY IMAGES

A shark is a type of fish. It breathes underwater with gills. Sharks sometimes travel and hunt alone. A group of sharks is called a school.

Dolphin

STUART WESTMORLAND—GETTY IMAGES

A dolphin is a mammal. It rises to the surface to breathe air into its lungs. Dolphins travel and hunt in groups. A dolphin group is called a pod.