angular brittle stars
... that juvenile angular brittle stars can re-enter a plankton phase, allowing them to relocate to a more suitable location?
... that juvenile <b id="mwuA"><a href="./Ophiothrix_angulata" id="mwuQ" rel="mw:WikiLink" title="Ophiothrix angulata">angular brittle stars</a></b> can re-enter a <a href="./Plankton" id="mwug" rel="mw:WikiLink" title="Plankton">plankton</a> phase, allowing them to relocate to a more suitable location?