Large seal (3,4)
I believe the answer is:
sea lion
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large seal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sea lion that I've seen before include "Marine beast, the male having a mane" , "Marine animal, used as a circus performer" , "Is alone (anag.)" , "Large marine mammal" , "Large-eared mammal of Pacific Ocean, like Leo" .)