Did You Know?

Some bivalves can make pearls!

How They Eat

Bivalves use their gills to eat food.

Where They Live

Bivalves live in sand or mud in water.

What Bivalves Do

They filter small food from water.

They help keep water clean.

Some can make pearls inside shells.

They are food for many animals.

People eat them too, like clams.

They can live a long time in the sea.

More About Bivalves

Bivalves have been around for a long time. They first showed up over 500 million years ago! They are found in many places, from deep oceans to shallow rivers.

Bivalves are important for our world. They help clean the water we drink and swim in. They also provide food for many sea creatures.

Some bivalves can live for many years. The oldest known bivalve lived for over 500 years! Isn’t that cool?

How Topics Connect

graph TD A["Bivalvia Overview"] --> B["Historical Names: Lamellibranchiata"] A --> C["Historical Names: Pelecypoda"] A --> D["Characteristics: Soft Bodies"] A --> E["Characteristics: Calcified Exoskeleton"] A --> F["Anatomy: No Head"] A --> G["Anatomy: Lack of Radula"] A --> H["Feeding: Ctenidia"]

What Do These Words Mean?

Bivalvia:A class of water animals with two shells.
molluscs:A large group of soft-bodied animals, like snails and clams.
calcified exoskeleton:A hard outer shell made of calcium.
hinged:Able to open and close like a door.
ctenidia:Special organs in bivalves used for eating and breathing.