FusionDex

Many tentacles can extend from Tentaeon's neck and can reach upwards of 15ft away. These Pokémon are ambush predators, becoming nearly invisible in the water and wrapping prey in their tentacles before feasting.

Tentaeon underwent a spontaneous mutation and grew fins and gills that allow them to live underwater. It lives in complex rock formations on the ocean floor and traps prey using its 80 tentacles.