Mer-wolf

Wild wind that beareth the spin-drift afar, Wild chant that telleth the doom of Asgar, Shriek ye, and wail ye, while shudd’ring doth sweep Serpent, his sea-horse, adown the great deep, Battling and mad like an eagle gone blind, Seeking the war-fleets, long sunken, to find , Down to the arms of Queen Ran of the sea, Down to the sea-floor, where mer-wolves go free.

Source: wiktionary

Well for the terrible mer-wolf, and the caves where the witch-wife lay Till we touched her brows where the fir-trees stand and all we witless wanderers wonne!

Source: wiktionary

Bare then the mer-wolf, when to the bottom she came, The ringed Prince to her own place, So that he might not, for all his proud mind, Wield his weapons; for such wondrous things Swinked him in the sound, sea-deer many With worrying tusks his war-sark tare, Chased him the creatures.

Source: wiktionary

Above them, more beasts frolicked in the sea: mer-unicorns, mer-dragons, mer-wolves, mer-elephants, even, Megan saw with astonishment, a mer-sphinx.

Source: wiktionary