Loch Nestor

Loch Nestor is a puffer fish in the game Super Mario World 2: Yoshi's Island. It only appears when Yoshi has been morphed into a submarine, and if hit by a torpedo, will simply grow two times larger and chase Yoshi.

Trivia

 * Loch Nestor holds the Scottish loch Loch Ness (which is famous for apparently being home to a sea monster known as the Loch Ness Monster) as its namesake. Most likely, however, Loch Nestor was probably named after the mysterious monster said to lurk within the loch rather than the body of water itself.