Flustra foliacea
... that Flustra foliacea looks like a seaweed but is actually a colony of animals?
... that <i id="mwCSI"><b id="mwCSM"><a href="./Flustra_foliacea" id="mwCSQ" rel="mw:WikiLink" title="Flustra foliacea">Flustra foliacea</a></b></i> looks like a <a href="./Seaweed" id="mwCSU" rel="mw:WikiLink" title="Seaweed">seaweed</a> but is actually a <a href="./Colony_(biology)" id="mwCSY" rel="mw:WikiLink" title="Colony (biology)">colony of animals</a>?