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**Phyla**: Echinodermata

**Class**:Echinoidea

**Scientific Name**: Heterocentrotus mammillatus

**Location**: Marine (saltwater), California to Ecuador and the Galápagos Islands.

**Size**: **Length**: 3 inches without spines.

**Habitat**: warm water, live in coral reefs.

**Living Requirements**: Spines are used for protection, locomotion, and food collection.

**Life Cycle**: Hide during the day and feed on algea at night.

**Male and Female Differences**: Reproduce due to the seasons usually late summer or early fall.

**Interesting Facts**: They do not have a brain. They can penetrate through human skin but not causing any harm to the human besides the wound.

**Human Impact**: In some parts of the world, like Japan, they are considered to be food.

Zookeeper: Sarah Reimer Content recieved from: [] [] [] Images recieved from: [] [] []