black sea cucumber
... that the black sea cucumber can split into two by transverse fission?
... that the <b id="mwoA"><a href="./Holothuria_atra" id="mwoQ" rel="mw:WikiLink" title="Holothuria atra">black sea cucumber</a></b> can split into two by transverse <a href="./Fission_(biology)" id="mwog" rel="mw:WikiLink" title="Fission (biology)">fission</a>?