Science

Purple sea urchin

It normally grows to a diameter of about

4 inches and it may live as long as 70 years.

|Scientific classification |

|Kingdom: |Animalia |

|Phylum: |Echinodermata |

|Class: |Echinoidea |

|Subclass: |Euechinoidea |

|Superorder: |Echinacea |

|Order: |Echinoida |

|Family: |Strongylocentrotidae |

|Genus: |Strongylocentrotus |

|Species: |S. purpuratus |

Giant Japanese spider crab

|Scientific classification |

|Kingdom: |Animalia |

|Phylum: |Arthropoda |

|Subphylum: |Crustacea |

|Class: |Malacostraca |

|Order: |Decapoda |

|Infraorder: |Brachyura |

|Superfamily: |Majoidea |

|Family: |Inachidae |

|Genus: |Macrocheira |

|Species: |M. kaempferi |

Sunflower sea star

Younger sunflower sea stars begin life with five arms, while adults

can have up to 24 arms. The sunflower sea star's skeleton is

comprised of a few unconnected pieces, allowing this species

better mobility and enabling it to stretch its body to engulf larger prey.

|Scientific classification |

|Kingdom: |Animalia |

|Phylum: |Echinodermata |

|Class: |Asteroidea |

|Order: |Forcipulatida |

|Family: |Asteriidae |

|Genus: |Pycnopodia |

|Species: |P. helianthoides |

Common cuttlefish

This cuttlefish has the same characteristics as most other

cuttlefish species, including eight arms, two tentacles, fins that

run along the edge of its body and the ability to...