Curse of the Wereshark

A mod that adds Weresharks to Skyrim and allows you to transform into a Wereshark without replacing the Werewolf transformation. Requires Dragonborn.

Beasts of Tamriel

Adds dozens of new creatures and monsters to Skyrim. The mod's main goal, aside from adding a more diverse range of fauna to Skryim, is to also add as many creatures from ES lore as possible and give hunters a truly wide range of prey to fight and hunt.

Sea of Spirits

This mod turns the Sea of Ghosts (and the rest of the seas in Skyrim and Solstheim) into a lively Sea of Spirits by adding many new sea creatures, like whales, narwhals, sharks, dreugh, and many others. Essentially just a "sea creatures-only" version of our Beasts of Tamriel mod without any of the land creatures.