Grade 2: Vertebrate Animals That Live in Water

🐠 Vertebrate Animals Living in Water 🌊

Vertebrates are animals that have a backbone. Many vertebrates live in water! Let's explore some of them:

🐟 Fish 🐡

• Gills: Fish breathe using gills to get oxygen from the water.
• Fins: They use fins to swim and stay balanced.
• Scales: Most fish have scales that protect their bodies.
• Examples: Salmon, goldfish, sharks.

🐸 Amphibians 🌿

• Life Cycle: Amphibians like frogs start their lives in water and later live on land.
• Skin: They have smooth, moist skin that helps them breathe.
• Examples: Frogs, salamanders, newts.

🐳 Marine Mammals 🐬

• Lungs: Marine mammals breathe air using lungs, just like us!
• Warm-blooded: They are warm-blooded and need to stay warm in cold water.
• Examples: Whales, dolphins, seals.

These animals have special adaptations that allow them to survive in their watery homes. For example, fish have streamlined bodies to swim efficiently, and marine mammals have a layer of blubber to keep them warm.