Various organisms take advantage of the pools of water trapped by bromeliads. A study of 209 plants from the Ecuadorian lowlands identified 11,219 animals, representing more than 300 distinct species, many of which are found only on bromeliads. Examples include some species of ostracods, small salamanders about in length, and tree frogs. Jamaican bromeliads are home to "Metopaulias depressus", a reddish-brown crab across, which has evolved social behavior to protect its young from predation by "Diceratobasis macrogaster", a species of damselfly whose larvae live in bromeliads. Some bromeliads even form homes for other species of bromeliads.