Sea cucumbers are “spiny animals”, members of the phylum Echinodermata and relatives of the seastars

These long-spined sea urchins, known collectively in Hawaiian as wana (pronounced “vah-na”), are fou

This distinctive sea urchin is found only in the wave impact zone where it is subject to the full fo

The rough-spined urchin belongs to the Family Cidaridae, a primitive group of urchins with large, bl

Rock-boring sea urchins are found in tidepools, on exposed reef flats, and in rocks within the wave

Sea urchins are among the most conspicuous invertebrates on Hawaiian shores and reefs. Their spines

Brittle stars resemble their relatives the seastars but are different and are in a separate class. B

This slender-armed seastar is found in crevices on shallow reefs and under rocks on the reef flat. A