Animal Nicknamed the "unicorn of the Sea"
This page is the CodyCross answer for the clue below from Peru, Group 1874, Puzzle 5 (Mount Huascaran).
Question is: Animal Nicknamed the "unicorn of the Sea"
and the answer is: NARWHAL
Word Meaning:
NARWHAL — An Arctic toothed whale (Monodon monoceros) that grows to about 20 feet (6 meters) long, the male having a single horn-like tusk, a twisted, pointed cuspid that projects forward.
Definitions from Wiktionary.