Complex sentence: Triton is the name given to various large sea snails of the genus "Charonia", named after the Greek god Triton, son of Poseidon, god of the Sea.
Split into simpler sentences: Triton is the name given to very large sea snails of the genus "Charonia". The common name is that of the Greek god Triton, who was the son of Poseidon, god of the Sea.