Tierra del Fuego Platypus
The Tierra del Fuego platypus (Monotrematum fuegoensis) is a species of platypus that is endemic to the Tierra del Fuego archipelago in South America.
They have a similar ecological role to the Australian platypus but are only distantly related. The feed on underwater invertebrates including worms, snails, crustaceans and insect larvae.
The Tierra del Fuego Platypus is known to venture into saltwater on occasion to feed, though they do not venture far from shore, typically only 50 feet. Even then they risk predation from sharks, seals and rarely cetaceans.
Like other Platypi, the Tierra del Fuego is venomous, however unlike other species in which only the males have venomous spurs. Both sexes possess venom on their back legs, though males have additional spurs on their forelimbs that they use more for intraspecific combat rather than defense.