According to wikipedia

Ciguatera: Ciguatera is a foodborne illness poisoning in humans caused by eating marine species whose flesh is contaminated with a toxin known as ciguatoxin, which is present in many microorganisms (particularly the micro-alga Gambierdiscus toxicus) living in tropical waters.

Hadal: Hadal zone or (trench zone) (Greek for "like Hades," in other words "unseen") or Hadopelagic zone is the delineation for the deepest trenches in the ocean. This zone is found from a depth of around 6,000 meters (20,000 ft) to the bottom of the ocean.

to me... she's a strom weilding eldritch-y warlock type / sea/swamp monster.... acid & tenticles & all
IN B4 MIDNITE YAH!!!!!!!