Marine Invertebrates

Can Sea Urchins Feel Pain?

Can Sea Urchins Feel Pain?

The nerves in a sea urchin are quite small - does that mean it does not follow that sea urchins feel pain? There is disagreement among scientists on this matter but read on to make up your own mind

What Are Sea Urchins

What Are Sea Urchins

Sea urchins live in oceans throughout the world - there are around 950 species of these spiny creatures that are classified under the phylum Echinodermata

How Do Sea Urchins Move Around

How Do Sea Urchins Move Around

How sea urchins move in the ocean using a water vascular system to attach and detach themselves is an interesting curiosity involving muscles and sticky secretions

Where Do Sea Urchins Live – Sea Habitats

Where Do Sea Urchins Live – Sea Habitats

Sea urchins are among the most diverse groups of echinoderms, with about 900 species. Where do sea urchins live - most sea urchins live in shallow water, but some live deep underwater.