Gessori

Gessori are a species of cephalopod enemies originating in Donkey Kong for Game Boy. Two of them are seen in Stage 3-7 on the Ship, where they swim around in the water at the bottom of the stage's room. Gessori follow a set horizontal line and swim by propelling themselves with their tentacles, changing direction whenever they encounter one of the room's limits. They damage Mario upon contacting him, and there is no way to combat them.

Perfect Ban Mario Character Daijiten
''' ゲッソリ 種族 　アクア族 性格 　まっすぐ 登場 ゲーム　GBドンキー ''' さわれないたおせない  水中を泳ぎまわるイカのモンスター. 上から触っても、横から触ってもダメージを受けてしまういやな敵. 触らないように注意して避けて泳いでいこう.

 Gessori  Tribe: Aqua clan Disposition: Straightforward Game appearances: GB Donkey  It cannot be touched  ''A squid monster swimming around in the water. It is a nasty enemy that will damage you whether you touch it from above or from the side. Swim carefully to avoid touching it.''