Hawaiian River (New Pleistocene)

A large river in Hawaii

Animals

 * Hawaiian River Dolphin, descended from bottlenose dolphins that can now tolerate both salt and fresh water. They are similar to the long-extinct baiji river dolphin in appearance, niche, locomotion, and size because of convergent evolution.
 * Hawaiian Leopard Seal, descended from leopard seals that were introduced to Hawaii. They are similar to leopard seals, but are browner in color and have a bulkier body. They feed on a variety of animals, mammals, fish and penguins.
 * Hawaiian Otter, descended from river otters that were introduced to Hawaii. They are carnivores. They are about the size of the extinct the Malayan tapirs.
 * Hawaiian Manatee, descended from manatees that were introduced to Hawaii by humans.  They are now bigger than their ancestors.
 * Hawaiian Catfish, descended from catfishes that were introduced to Hawaii by humans. They are now bigger, about the size of an average size pig, and is more herbivorous than their ancestors.
 * Hawaiian Crocodile, descended from saltwater crocodiles that escaped from zoos. They are now bigger than their ancestors.