Tandrak

X / Omega Ruby: Their poison is strong enough to eat through the hull of a tanker, and they spit it indiscriminately at anything that enters their territory.

Y / Alpha Sapphire: Tales are told of ships that wander into seas where Dragalge live, never to return.

Ultra Sun: This vicious Pokémon sprays a poisonous liquid on opponents that come near. For whatever reason, it gets along really well with Dhelmise.

Ultra Moon: It blends in with seaweed to ambush its prey and then takes them down with a poisonous liquid strong enough to melt metal.

Sword: Dragalge uses a poisonous liquid capable of corroding metal to send tankers that enter its territory to the bottom of the sea.

Shield: Dragalge generates dragon energy by sticking the plume on its head out above the ocean’s surface and bathing it in sunlight.