Titles Seahorse Wyvern
Nicknames Pelagi
General Info
Species Leviathan
Habitats Deserted Island
Size Large
Relatives None
Signature Move Ink Spray
Elements Element Water Water
Ailments Status Blind Dark
Status Defense Down Defense Down
Element Water Waterblight
Weaknesses Element Thunder Thunder
Creator MonsterHunterFlacko

Pelagianos (タノトシゴ, Tanotoshigo) is a Leviathan.


Pelagianos is a large Leviathan that is covered in mostly purple scales, save for its yellow, compact belly scales. It has a long, tubular snout, two crests curving over either side of its head, and large fins with sharp, pointed, yellow-colored tips that extend slightly past its cheeks. Its feet have cream-colored webbing and four yellows claws on each foot. It has a long, thick, tightly curled tail. It neck, legs, and tail are adorned with white bony rings.


From its snout it can shoot water jets with devastating power. It can also spray a dense black ink. The ink is very irritating should it come into contact with skin. This ink also damages and degrades armor. When spraying ink it aims for the attacker's eyes for maximum effectiveness. It can quickly unfurl its tail and strike prey in a whip-like fashion.


Pelagianos is markedly vicious, and will mercilessly attack whatever ventures near its nest.


Pelagianos is only found within the Deserted Island, where it often travels to open sea in search of prey.


  • Its English name is derived from the word pelagic, meaning of or relating to the open sea. Its Japanese name comes from the Japanese name for seahorses, 竜の落し子 tatsu-no-otoshigo, which means "dragon's child".
  • Pelagianos's head can be broken twice and both of its front claws can be broken as well. Its tail can also be severed.
    • Severing its tail will prevent it from performing its tail whip attack.
  • When in Rage Mode its water jet and ink spray attacks will have increased range, and its ink spray will cause Defense Down.
  • When low on stamina it will fail to shoot water and ink. Pelagianos will eat fish from a fishing spot to recover Stamina.
  • Its head and all four of its claws can be wounded, and its tail can be wounded and severed.
  • Pelagianos'rs roar requires Earplugs to block.