Mytella guyanensis

Mytella guyanensis is a species of saltwater clams, marine bivalve molluscs in the family Mytilidae, the mussels. Shells of this species can reach a length of 50–60 millimetres (2.0–2.4 in). This species is present in Mexico, Brasil, Costa Rica, Australia, Tasmania, Macquarie Island, Jamaica, Panama, Peru and South Carolina.