go to jove.com

MIDDLE SCHOOL

Life Science

Biological Evolution: Unity and Diversity

This is a free preview. For full access

Biological Evolution: Unity and Diversity: Vertebrates and Invertebrates

Cnidarians

Description

Cnidarians

Cnidarians are simple aquatic animals that include jellyfish, sea anemones, corals, and hydras. Although they may appear delicate, they are skilled predators that utilize stinging cells to catch prey. They have soft bodies and a central opening that acts as both a mou...

Transcript

Have you ever spotted a colorful rock underwater? It might have been a coral, a marine animal in the cnidarian family.

Cnidarians are a group of marine animals that include corals, jellyfish, and sea anemones.

Cnidarians have radial symmetry, with body parts arranged around a central point.

They come in two body forms: the pol...