Elkorn Coral is named after its large, thick branches that resemble elk antlers; these branches are an important habitat for many reef species. These data represent the critical habitat for elkhorn coral (Acropora palmata) and staghorn coral (A. cervicornis) as designated by 73 FR 72210, November 26, 2008, Rules and Regulations. Name of animal-plant: Elkhorn coral Species name: Acropora palmata Animal type: BENTHIC Subcategory: coral Fact: All animals and plants are given a species name based on a technical term in biological taxnomy. The upper limit is defined by wave forces, and the lower limit is controlled by suspended sediments and light availability. Elkhorn coral is considered to be one of the most important reef-building corals in the Caribbean. It occurs in back reef and fore reef environments from 0 to 30 m (0 to 98 ft) depth. Purpose: The purpose of these data is to visually represent the critical habitat areas for GIS analysis and display. This species is structurally complex with many large branches, hence its nickname of "Our Rainforest of the Ocean" These branches create habitats for many other reef species, such as lobsters, parrot-fish, and snapper shrimps. The species name consists of two words and is based on Latin. The staghorn coral (Acropora cervicornis) is a branching, stony coral with cylindrical branches ranging from a few centimetres to over two metres in length and height. Staghorn and Elkhorn coral are harvested for building materials, souvenirs, jewelery, and for aquariums. The number one threat for coral reefs globally is climate change. Colonies of Elkhorn Coral grow through a process known as fragmentation: when a branch breaks off, it attaches itself to the substrate and forms a new colony. Elkhorn Coral (Acropora palmata) ESA requires that critical habitat is designated and recovery plans are developed and implemented for species listed as threatened or endangered. Critical habitat is designated for both elkhorn and staghorn corals as described in this section.