Triton
Webster's Dictionary [1]
(1): ( n.) Any one of many species of marine gastropods belonging to Triton and allied genera, having a stout spiral shell, often handsomely colored and ornamented with prominent varices. Some of the species are among the largest of all gastropods. Called also trumpet shell, and sea trumpet.
(2): ( n.) Any one of numerous species of aquatic salamanders. The common European species are Hemisalamandra cristata, Molge palmata, and M. alpestris, a red-bellied species common in Switzerland. The most common species of the United States is Diemyctylus viridescens. See Illust. under Salamander.
(3): ( n.) A fabled sea demigod, the son of Neptune and Amphitrite, and the trumpeter of Neptune. He is represented by poets and painters as having the upper part of his body like that of a man, and the lower part like that of a fish. He often has a trumpet made of a shell.
Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]
in Greek mythology, was primarily a son of Nepture, by Amphitrite, who lived with his father and mother on the bottom of the sea in a golden palace. Hence the name was applied to any daemon of the Mediterranean Sea, who rode, sometimes upon horses, at other times on monsters of the deep, and occasionally appeared, assisting other deities in riding. Such Tritons are described differently. They are probably of the double nature, half man and half fish. The hair of their head is green, they have fine scales, gills under their ears, a human nose, a broad mouth with animal teeth, green eyes, hands, fingers, and nails rough, and instead of feet they possess the tail of a dolphin. They blow a spiral-formed trumpet.
The Nuttall Encyclopedia [3]
In the Greek mythology a sea deity, son of Poseidon and Amphitrite; upper part of a man with a dolphin's tail; often represented as blowing a large spiral shell; there were several of them, and were heralds of Poseidon.
