Petrasyl

Harmless from a distance, this airborne creature secretes a toxin that can burn through all but the toughest materials on contact.

Petrasyls are usually found in a group of two or more of their own kind. Although at first glance they bear a close resemblance to Metroid, and an even closer resemblance to Mochtroids, they do not appear to be related to either species; in fact, upon closer inspection  they appear to in actuality be floating jellyfish creatures.

VDO
Bioweaponry Lab