Graeffe's sea cucumbers
... that juvenile Graeffe's sea cucumbers mimic the bright colouring of the sea slug Phyllidia varicosa, which is toxic?
... that juvenile <b id="mwBiQ"><a href="./Pearsonothuria" id="mwBiU" rel="mw:WikiLink" title="Pearsonothuria">Graeffe's sea cucumbers</a></b> <a href="./Mimicry" id="mwBiY" rel="mw:WikiLink" title="Mimicry">mimic</a> the bright colouring of the sea slug <i id="mwBic"><a href="./Phyllidia_varicosa" id="mwBig" rel="mw:WikiLink" title="Phyllidia varicosa">Phyllidia varicosa</a></i>, which is <a href="./Toxicity" id="mwBik" rel="mw:WikiLink" title="Toxicity">toxic</a>?