Triton was known to carry a twisted conch shell, on which he blew to calm or raise the waves.
The recovered sculptures confirmed an account by Roman scholar Pliny the Elder (23 A.D. - 79 A.D.), who described the sea cave as populated by a Triton "playing on a shell."
Now on display at a museum in Anacapri, the three statues have provided a glimpse of the original setting of the Blue Grotto.
According to the reconstruction, a swarm of Tritons headed by Neptune might have lined the rocky walls of the cave. Bathed in the magic light of the grotto, the statues stood with waters at their knees.
During the Marevivo survey, aimed at finding the original bases of the three statues, divers found a total of seven bases at a depth of 150 meters (492 feet). This suggests that at least four other statues lie on the cave's sandy bottom.
"The sculptures were all placed at the same level. It is likely that other statues will come to light as the project continues with new underwater investigations," diver Vasco Fronzoni told Discovery News.