Sea unicorn (7)
I believe the answer is:
narwhal
(Other definitions for narwhal that I've seen before include "Marine mammal with single tusk" , "Small Arctic whale" , "beast" , "Tusked sea mammal" , "Tusked marine creature" .)
I believe the answer is:
narwhal
(Other definitions for narwhal that I've seen before include "Marine mammal with single tusk" , "Small Arctic whale" , "beast" , "Tusked sea mammal" , "Tusked marine creature" .)