"TRITON was a fish-tailed sea-god, the son and herald of Poseidon who stilled the waves with his conch-shell trumpet.
Triton was also described as the god of the Tritonis, a large salt-lake in Libya. When the Argonauts found themselves stranded in the middle of the desert he helped them find passage from the lake back to the sea."
source/
http://www.theoi.com/Pontios/Triton.html