The Fabled Jellyfish in their Habitat.
Jellyfish (クラゲ, Kurage) are a species of Cnidaria that resides in a underwater region in the Toran Ocean near the Land of Gelel, they are rarely sought out by people who wants an summon due to their short life span but due to the influence stemming from the Vein of Gelel that enriched the jellies with strong life-force and extended life expectancy. The Jellyfishes are characteristic summons of Sōma Chinoike; The Black Witch of the fabled Naijin utilizing their venom and newly inherited Lightning Release base capabilities to bring terror and dominion over those who see's them as weak.