Depthmon

Depthmon is a Sea Animal Digimon whose name and design are derived from. It is the Armor Digivolved form of Veemon through the Digi-Egg of Reliability. Through the Digi-Egg's power it has become adept at underwater operations and can swim rapidly like a fish. Additionally, its armor has a high resistance to water pressure, and it is capable of deep-sea diving even further than its fellow Sea Animal, Divermon. With its diving capacity, it can even compete with Whamon.

Digimon Tamers: Battle of Adventurers
Depthmon was one of the Digimon guarding VP Labs when Takato and Kai ventured there to rescue the kidnapped Minami. Attacking their boat from beneath the water, Depthmon seized Seasarmon, Minami's partner, and dragged him below the waves. However, he was no match for the canine Digimon's power and was easily destroyed.

Digimon World 3
Depthmon is one of the digimon that help you progress of the making of the 5 legendary weapons. He can be found in Asuka Server's North Sector, in the Lake of Ice if the rookie is Veemon. If the rookie is Agumon, then he can be found in Amaterasu's Central Sector, in Shell Beach's seabed. If the rookie is Guilmon, he can be found in the same place, in Asuka Server. If you give him Vanquish and Venom Fang, he will make Destruction.

Attacks
 * Bubble Bomb
 *  Drag
 * Marine Knives