INVERTEBRATES

 How are invertebrates classified?

Invertebrates don’t have a backbone or a bone skeleton.

There are six types of invertebrates. The four most simple ones are below.

Porifera are aquatic sponges. They have pores that filter water. They use the nutrients and oxygen in the water.

Cnidaria are aquatic organisms like jellyfish, anemones and coral. Some cnidaria use their poisonous tentacles to trap other animals as food.

Jellyfish

Anemone

Coral

Annelids can be aquatic organisms or land organisms. They take in oxygen through their skin. Their long bodies are divided into rings.

Earthworm

Echinoderms are aquatic organisms without a head, such as urchins and starfish. Their tentacles allow them to move, feed and obtain oxygen.

Sea urchin

Starfishes

ECHINODERMS AND SPONGES

CNIDARIANS

ANNELIDS OR WORMS

INVERTEBRADOS MÁS VENENOSOS

TOP INVERTEBRADOS MÁS GRANDES

INVERTEBRADOS LARGOS

ANIMALES INVERTEBRADOS

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