Divermon

Divermon is an Ultimate Level Sea Animal Digimon. They are known as Hangyomon in Japan.

Digimon Adventure
The first bunch of Divermon seen were working for MetalSeadramon to help him hunt down the Digi-Destined who are within Whamon. During the final battle against MetalSeadramon, they were destroyed by Zudomon.

Digimon 02
The "Scubamon" servants of Dragomon based their disguise off them except for the swim gear. Later on, a Divermon was a partner of an unknown Australian Digi-Destined. Some Divermon were seen during the final battle against MaloMyotismon.

The Adventurer's Battle
The first Divermon that any of the Tamers encountered appeared in Okinawa - one of the Digimon in pursuit of Minami Uehara. Watari Urazoe - grandfather of Takato Matsuki's cousin, Kai - attempted to fight the creature, but was thrown aside. The Divermon pursue Kai and Minami, grabbing the girl, but then, Seasarmon emerged from her laptop and took the Divermon on, destroying it.

Digimon Tamers
After being separated from their friends by a Data Stream, Takato Matsuki, Henry Wong and Terriermon wound up on the water plain of the Digital World, where they met some Otamamon, who ran away from them. Divermon appeared and attacked the trio, thinking they had attacked the Otamamon. Henry managed to knock his spear away and crash him into some rocks, and Terriermon finished him off with a Terrier Tornado. He then apologized, and they asked him if he could lead them to someplace that wasn‚Äôt made of water. He led them to a pipe, which took them to a crossroads of many tubes, where they met some DigiGnomes, who led them to Shibumi‚Äôs library.