|Environment||Any air (Astral Plane)|
Source: Planar Adventures, pg(s). 248
Whyrlishes are giant jellyfish-like creatures native to the Astral Plane, where they feed on the metaphysical energies of the River of Souls. This process does no harm to the souls in the river, but often puts whyrlishes at odds with would-be harvesters of souls, who often have to deal with them. A typical whyrlish is 30 feet long (including tentacles), and weighs about 2,500 pounds.