Whales & Dolphins Are Mammals

Mastery Evidence

• State that whales and dolphins are mammals, not fish
• Give at least two reasons why: they breathe air and feed babies milk
• Explain that living in water does not make an animal a fish

Assessment Prompt

“If [child] saw a dolphin jumping out of the water, could they explain that dolphins are mammals like us — they breathe air and feed their babies milk — not fish?”