sea urchin hid in coral in the surf. sea urchins are members of the phylum echinodermata, which also includes sea stars, sea

alert animal apia aqua aquatic attentive background beach beast black careful close closeup coast coral danger echinoderm echinodermata echinoidea echinus endangering fauna glide gold golden island landscape lay lemon menace nature nautical needle needlefish observant ocean one outdoor pacific people person pin polynesia polynesian portrait prick prickle quill rest rock samoa samoan sand sanddollar sea seashore seaurchin shore spine surf swimming threat threaten tropical unsafe upolu urchin warily wary watchful water wild wildlife without yellow zoo zoological