🌍The ocean covers most of Earth.

🌊The Pacific is the biggest ocean.

🌊Deep down in the ocean it is dark.

🐟Many deep-sea animals make their own light.

💧Plankton are tiny living things that drift in the ocean.

🐚Coral reefs are built by tiny animals called polyps.

🐳Blue whales eat krill, which are tiny sea animals.

🐳A blue whale can grow to be about 100 feet long.

Words to know

• plankton: tiny drifters
• krill: tiny sea animals
• polyps: tiny animals