Answer:

TRITON

Answer	Crossword Clue
TRITON	Moon of Neptune
TRITON	Merman of myth
TRITON	Poseidon's son

TRITON	Neptunian moon
TRITON	Neptune's largest moon
TRITON	Largest of Neptune's moons
TRITON	Son of Poseidon
TRITON	Spiral-shelled mollusk
TRITON	The Little Mermaid's dad
TRITON	Neptune moon
TRITON	Colorful seashell

TRITON	Largest moon of Neptune
TRITON	Mythical storm raiser
TRITON	Sea demigod.
TRITON	Son of Poseidon.
TRITON	Blower of a "wreathed horn."
TRITON	Sea god.
TRITON	"Or hear old ... blow his wreathed horn."
TRITON	Submarine in recent headlines.

TRITON	Salamander.
TRITON	Minor sea god.
TRITON	Nuclear submarine.
TRITON	Demigod of the sea.
TRITON	Greek sea god.
TRITON	Newt or eft.
TRITON	Mermaid
TRITON	Salamander

TRITON	Newt
TRITON	A son of Poseidon
TRITON	God of the deep
TRITON	One of Neptune's moons
TRITON	Colorful spiral seashell
TRITON	Neptune satellite
TRITON	Large spiral shell
TRITON	Greek god with a conch-shell trumpet

TRITON	Spiral seashell
TRITON	Largest moon in the solar system with a retrograde orbit
TRITON	King in "The Little Mermaid"
TRITON	Moon photographed by Voyager 2 in 1989
TRITON	Sea snail