Elemental Beast, Water

''A swarm of foot-long beasts resembling piranhas with four gleaming eyes and membranous wings folding back from their bodies. They swirl through the air as easily as they do through water, their long thin fangs snapping in anticipation of the attack.''

Tactics
Water elemental beasts attack in a swarming mass, biting with their razor sharp teeth in a feeding frenzy. The creatures are most comfortable when submerged in water, but can emerge and fly for short distances. It flies in short hops of up to 20 feet in length and is forced to land between hops

When airborne, the water elemental beast swarm adopts a more frightening tactic and actively attempts to clog the airways of its target with its watery form. Typically, the swarm will attempt to suffocate airbreathing targets and then devour their bodies in waves, returning to nearby water to refresh between courses.

Description
Water elemental beasts are the smallest of their kind but can be among the most dangerous due to the fact that they live and move as a single, swarming entity. Composed entirely of rippling water of variegated hues, they take savage, piscine forms. They are most at home in water, but they have the ability to leave their parent element and fly for short periods of time. On their home plane they are often domesticated by the marid race but they are also infrequently summoned to Athas. Despite their usefulness, they do not fare well on Athas, due to the scarcity of their parent element. Each individual beast is between nine and twelve inches in length, weighing just under a pound.