Honen

From the Super Mario Wiki

Honen are a common sight in the Muda Kingdom of Sarasaland. They appear in Super Mario Land. According to the instruction manual, they are the skeletons of Torion eaten by Tatanga and jump out of the oceans or oceanic caverns of Muda. This appears to be what they do whether there is an enemy there or not. They can easily be defeated by being jumped on (Or by simply standing above them. This trick has appeared in many Mario games), but they remain unaffected by superballs. Defeating one is worth 100 points. They appear in World 2-1 and World 2-3.

Official artwork of a Honen

Honen, the skeletal fish

Various sprites of a Honen

Super Mario Land Enemies
Batadon \| Bunbun \| Chibibo \| Chicken \| Chikako (Glitter) \| Fly \| Ganchan \| Gao \| Gira \| Gunion \| Honen \| Kumo \| Mekabon \| Nokobon \| Nyololin \| Pakkun Flower \| Pionpi \| Pompon Flower \| Roketon \| Suu \| Tokotoko \| Torion \| Yurarin \| Yurarin Boo
Super Mario Land Characters
Mario/Superball Mario \| Princess Daisy \| King Totomesu \| Dragonzamasu \| Tamao \| Hiyoihoi \| Biokinton \| Tatanga
Super Mario Land Areas
Birabuto Kingdom \| Muda Kingdom \| Easton Kingdom \| Chai Kingdom \| Sarasaland
Super Mario Land Objects
Super Mushroom \| Flower \| Superball \| Star \| 1-Up Heart \| Coin \| Mystery Block \| Marine Pop \| Sky Pop \| Pagosu

Undead

Luigi's Mansion Ghosts

Characters
Neville \| Lydia \| Chauncey \| The Floating Whirlindas \| Shivers \| Melody Pianissima \| Mr. Luggs \| Spooky \| Bogmire \| Biff Atlas \| Miss Petunia \| Nana \| Slim Bankshot \| Henry and Orville \| Madame Clairvoya \| Boolossus \| Uncle Grimmly \| Clockwork Soldiers \| Sue Pea \| Jarvis \| Sir Weston \| Vincent Van Gore \| King Boo \| 50 Boos
Species
Bat \| Blue Blaze \| Blue Mouse \| Blue Twirler \| Bowling Ghost \| Ceiling Surprise \| Flash \| Flying Fish \| Garbage Can Ghost \| Grabbing Ghost Gold Ghost \| Gold Mouse \| Mr. Bones \| Purple Bomber \| Purple Mouse \| Purple Puncher \| Shy Guy \| Spark \| Speedy Spirit \| Temper Terror \| Waiter \| Bogmire Shadow \| Fire Elemental Ghost \| Ice Elemental Ghost \| Trapdoor \| Water Elemental Ghost

Other/Unknown

Species/Characters
???? \| Bink \| Blinky \| Bloat \| Bone Dragon \| Bonechill \| Boneheads \| Bonetail \| Bony Beetle \| Boo \| Bouldergeist \| Caged Ghost \| Captain Skull \| Cortez \| Count Zoltan Dracula \| Cractus \| D-Man \| Dangling Ghost \| Dark Skellobit \| Dark Spiky Skellobit \| Davy Bones \| Doopliss \| Doppel \| Dry Bowser \| Eerie \| Elvis Presley \| Ember \| Exterminator \| Fishbone \| Flightless Skeleton Goonie \| Frankenstein's Monster \| Ghost Barrel \| Ghost Glove \| Ghost Goom \| Ghost Piranha \| Ghost Rider \| Ghost Rope \| Ghosts of Christmas \| Ghost T. \| Ghoul Guy \| Giant Ghost \| Glum Reaper \| Goomba Mummy \| Gooey \| Greaper \| Grim Leecher \| Grindel \| Gusty \| Hector the Reflector \| Hobgoblin \| Honen \| Hoohoo Spirit \| Invisighoul \| Inviso \| Queen Jaydes \| Jean de Fillet \| Kackle \| Kingfin \| Kloak \| Krossbones \| Krow \| Lava Bubble \| Madam Merlar \| Mastadoom \| Merlumina \| Meteor Ghost \| Monsieur Boo \| Mummipokey \| Mummy Guy \| Pandorite \| Phantom Ember \| Phantom Guy \| Phantom Hand \| Pionpi \| Pokey Mummy \| Poobah the Pharaoh \| Queen Mushroomkhamen \| ReDead \| Reacher \| Resident Demon \| Roger the Potted Ghost \| Sarcopha Guy \| Shadow \| Shadow Queen \| Shayde \| Shiisa \| Skeleton Bee \| Skeleton Goonie \| Skellobait \| Skellobit \| Skellobomber \| Skellokey \| Slime Ghost \| Spiky Skellobait \| Spiky Skellobit \| Spindel \| Straw Head \| Support Ghost \| Three Musty Fears \| Tweeter Bat \| Underhand \| Wrinkly Kong \| Zombie Goomba \| Zombone