Did You Know?
Starfish can grow back lost arms!
What They Look Like
Echinoderms have a hard shell. They can be spiky or smooth.
Where They Live
They live in the sea. Some are in deep water.
What echinoderms Does
They help clean the sea floor.
Some eat plants and small fish.
They are food for some fish and birds.
They can move slowly on the sea floor.
Some can stick to rocks.
They can live in many places in the sea.
More About echinoderms
Echinoderms have been around for a long time. They first came a long, long time ago. They are very old animals in the sea.
We see echinoderms when we go to the beach. They help keep the ocean clean and healthy.
Some echinoderms can grow back lost parts. This helps them stay safe from harm.
How Topics Connect
graph TD
A["Echinodermata Phylum"] --> B["Includes Starfish"]
A --> C["Includes Sea Urchins"]
A --> D["Includes Sea Cucumbers"]
A --> E["Five-Pointed Radial Symmetry"]
A --> F["Found at All Ocean Depths"]
A --> G["First Appeared in Cambrian"]
What Do These Words Mean?
Echinoderm:A type of sea animal like starfish and sea urchins.
Phylum:A major group in the classification of living things.
Radial symmetry:A shape that looks the same from multiple sides, like a star.
Deuterostomes:A group of animals that develop in a certain way during early growth.
Cambrian:A period in Earth's history when many new types of animals first appeared.
