Tentacruel

Description
Tentacruel are large, primarily blue jellyfish-like Pokemon. They have two large, red crystal spheres encrusted onto their upper bodies which can refract sunlight and can be used to store energy. The round lower body, from which Tentacruel’s eyes are visible, appears black in coloration, but it is possible the coloration was meant to stylistically represent a dark space. It can extend up to 80 tentacles out of its body, most of which are hidden, leaving up to 14 exposed. It has two blue beak-like appendages. With 80 tentacles for ensnaring victims, it prevents escape until the prey is weakened by poison. It alerts others to danger by stridently flashing the red orbs on its head. Its 80 tentacles absorb water and stretch almost endlessly to constrict its prey and enemies.

Evolution
-- Lvl 30 -->

Location
Evolve Tentacool

You can also receive one in the pokemon center, section "Battle ready non-shiny pokemon."

Shiny Tentacruel
Evolve Shiny Tentacool