Loch Nestor

Loch Nestor is a enemy encountered in Super Mario World 2: Yoshi's Island, Yoshi's Island: Super Mario Advance 3 and Yoshi's New Island. They only appear in stages where Yoshi must morph into a Submarine. When Yoshi touches one, he briefly sinks to the bottom. If hit by a torpedo, Loch Nestors simply grow larger and chase Yoshi, but explode after being hit multiple times. In the original game, they take a total of three hits to defeat; in Yoshi's New Island, they only need to be hit twice.

Loch Nestor derives its name from, a given name, and the Scottish lake Loch Ness, which is the home of the legendary. The lips on the Loch Nestor are exactly the same as the ones on Piscatory Pete.

Super Mario World 2: Yoshi's Island

 * Shogakukan guide: 攻撃すると怒って突進してくる. 魚雷３発で倒せるが、水の中では逃げるに限る. (When you attack it, it gets angry and rushes at you. Three torpedoes can defeat it, but in the water it is best to get away.)
 * Official Nintendo Player's Guide: Dangerous as a depth charge to submarine Yoshi. Flush him out with your endless supply of torpedoes.

Yoshi's Island: Super Mario Advance 3

 * Shogakukan guide: 攻撃するとおこって突進する. 魚雷３発で倒せるが、深追いせず、逃げたほうがいい場合も. (When attacked, it will get angry and rush forward. It can be defeated with three torpedoes, but it may be better to get away instead of going after it too hard.)