Loch Nestor is a round, orange pufferfish enemy featured in Super Mario World 2: Yoshi's Island and Yoshi's New Island. They only appear in areas where a Yoshi has to take on the form of a Submarine. A Loch Nestor can be attacked by firing a torpedo at it. A Loch Nestor swells up with each hit, and shooting three torpedoes (two in Yoshi's New Island) at a Loch Nestor causes it to explode, defeating it. If Submarine Yoshi touches a Loch Nestor, he gets stunned for about one second.

Its name is a pun on the Loch Ness Monster despite having no apparent similarities to it.

Characters	Protagonists	Green Yoshi • Blue Yoshi • Brown Yoshi • Light Blue Yoshi • Pink Yoshi • Purple Yoshi • Red Yoshi • Yellow Yoshi
	Antagonists	Baby Bowser • Kamek
	Supporting	Baby Mario • Baby Luigi • Stork • Poochy • Melon Bug • Huffin' Puffin • Muddy Buddy • Support Ghost • Liquid lift
Enemies	Enemies	Aqua Lakitu • Bandit • Barney Bubble • Baron von Zeppelin • Beach Koopa • Big Boo • Big Shy Guy • Blow Hard • Boo • Boo Balloon • Boo Blah • Boo Guy • Boo Man Bluff • Bouncing Bullet Bill • Bowling Goonie • Bubble Dayzee • Bullet Bill • Bumpty • Burt • Cactus Jack • Caged Ghost • Chain Chomp • Incoming Chomp • Cheep Cheep • Chomp Shark • Clawdaddy • Cloud Drop • Co-Blargg • Coin Bandit • Crazee Dayzee • Dancing Spear Guy • Dangling Ghost • Dizzy Dandy • Dr. Freezegood • Eggo-Dil • Fang • Fat Guy • Fishin' Lakitu • Flightless Goonie • Flightless Skeleton Goonie • Flopsy Fish • Flutter • Fly Guy • Frog Pirate • Fuzzy • Gargantua Blargg • Georgette Jelly • Green Glove • Grinder • Goomba • Goonie • Grim Leecher • Grunt • Gusty • Harry Hedgehog • Hefty Goonie • Hootie the Blue Fish • Hot Lips • Jean de Fillet • Kaboomba • Kamek's Toadies • Koopa Troopa • Lakitu • Lantern Ghost • Lava Drop • Lemondrop • Little Mouser • Little Skull Mouser • Loch Nestor • Lunge Fish • Mace Guy • Milde • Mini-Raven • Mock Up • Mufti Guy • Naval Bud • Needlenose • Needlenose Plant • Nep-Enut • Nipper Plant • Nipper Spore • Paratroopa • Piscatory Pete • Podoboo • Pokey • Potted Spiked Fun Guy • Preying Mantas • Puchipuchi L • Raven • Rip Van Fish • Seedy Sally • Short Fuse • Shy Guy • Skeleton Goonie • Slime • Slugger • Sluggy • Snifit • Solo Toady • Spear Guy • Spike • Spiked Fun Guy • Spooky • Spray Fish • Stilt Guy • Stretch • Tap-Tap • Thunder Lakitu • Whirly Fly Guy • Wild Piranha • Wild Ptooie Piranha • Woozy Guy • Zeus Guy
	Bosses	Burt the Bashful • Salvo the Slime • Bigger Boo • Roger the Potted Ghost • Prince Froggy • Naval Piranha • Marching Milde • Hookbill the Koopa • Sluggy the Unshaven • Raphael the Raven • Tap-Tap the Red Nose • Baby Bowser
Items	General	Blue watermelon • Coin • Green Shell • Green watermelon • Key • Red coin • Red Shell • Red watermelon • Special Flower • Star • Super Star • Yoshi Egg (Flashing Egg · Giant Egg · Red Egg · Yellow Egg)
	Special Items	10-Point Star • 20-Point Star • Anytime Egg • Anywhere POW • Winged Cloud Maker • Magnifying Glass • Super Green Watermelon • Super Red Watermelon • Super Blue Watermelon
Objects	Objects	! Block • Arrow block • Arrow Cloud • Balloon (Mini Battle) • Balloon (platform) • Beanstalk • Breakable block • Bubble • Bucket • Chomp Rock • Coin Block • Countdown Platform • Cracked block • Current • Donut Lift • Dotted-Line Block • Egg Block • Egg Plant • Expansion Block • Falling stone block • Flatbed Ferry • Flipper • GOAL! Ring • Ice Block • Icicle • Makeshift surfboard • Message Block • Middle Ring • Morph Bubble • Moving Block • Paddle wheel • Post • Pot • POW Block • Red-and-yellow bridge • Red balloon • Rolling rock • Ski Lift • Snowball • Spinning Log • Spinning wheel • Spotted platform • Spring Ball • Squishy block • Switch • Teeter-totter • Track ball • Tulip • Tumbler • Warp Pipe • Winged Cloud • Yoshi Block
	Obstacles	Ball 'n' Chain • Bill Blaster • Cannonball • Lava • Makiage Dosun • Spike • Spiked Ball • Spiked Weight • Spinning Fireballs • Thorn
Worlds	World 0	Welcome To Yoshi's Island (0-0)
	World 1	Make Eggs, Throw Eggs (1-1) • Watch Out Below! (1-2) • The Cave Of Chomp Rock (1-3) • Burt the Bashful's Fort (1-4) • Hop! Hop! Donut Lifts (1-5) • Shy Guys On Stilts (1-6) • Touch Fuzzy, Get Dizzy (1-7) • Salvo the Slime's Castle (1-8) • Poochy Ain't Stupid (1-★)
	World 2	Visit Koopa And Para-Koopa (World 2-1) • The Baseball Boys (2-2) • What's Gusty Taste Like? (2-3) • Bigger Boo's Fort (2-4) • Watch Out For Lakitu (2-5) • The Cave Of The Mystery Maze (2-6) • Lakitu's Wall (2-7) • The Potted Ghost's Castle (2-8) • Hit That Switch!! (2-★)
	World 3	Welcome to Monkey World! (3-1) • Jungle Rhythm (3-2) • Nep-Enut's Domain (3-3) • Prince Froggy's Fort (3-4) • Jammin' Through The Trees (3-5) • The Cave Of Harry Hedgehog (3-6) • Monkey's Favorite Lake (3-7) • Naval Piranha's Castle (3-8) • Hit That Switch!! (3-★)
	World 4	GO! GO! MARIO!! (4-1) • The Cave Of The Lakitus (4-2) • Don't Look Back! (4-3) • Marching Milde's Fort (4-4) • Chomp Rock Zone (4-5) • Lake Shore Paradise (4-6) • Ride Like The Wind (4-7) • Hookbill The Koopa's Castle (4-8) • The Impossible? Maze (4-★)
	World 5	BLIZZARD!!! (5-1) • Ride The Ski Lifts (5-2) • Danger - Icy Conditions Ahead (5-3) • Sluggy The Unshaven's Fort (5-4) • Goonie Rides! (5-5) • Welcome To Cloud World (5-6) • Shifting Platforms Ahead (5-7) • Raphael The Raven's Castle (5-8) • Kamek's Revenge (5-★)
	World 6	Scary Skeleton Goonies! (6-1) • The Cave Of The Bandits (6-2) • Beware The Spinning Logs (6-3) • Tap-Tap The Red Nose's Fort (6-4) • The Very Loooooong Cave (6-5) • The Deep Underground Maze (6-6) • KEEP MOVING!!!! (6-7) • King Bowser's Castle (6-8) • Ultimate Castle Challenge (6-★)
Forms	Morph Bubble	Car • Helicopter • Mole Tank • Submarine • Train
Minigames	Mini Battles	Gather Coins • Popping Balloons • Throwing Balloons • Watermelon Seed Spitting Contest
	Bonus Challenges	Flip Cards • Scratch and Match • Drawing Lots • Match Cards • Roulette • Slot Machine