Graham’s Sheet Coral, scientifically known as Agaricia grahamae, is a captivating species of stony coral that thrives in the vibrant underwater landscapes of the ocean. Its delicate, sheet-like structure and intricate patterns make it a remarkable sight to behold, contributing to the biodiversity of coral reefs worldwide.
Description & Characteristics
Agaricia grahamae is distinguished by its thin, flattened colonies that resemble sheets or plates. These colonies can grow to a substantial size, reaching a maximum diameter of up to 1 meter. The coral’s surface is adorned with intricate patterns, featuring numerous small, interconnected polyps that extend outward, giving the colony a distinctive texture.
Habitat and Occurrence
Graham’s Sheet Coral is primarily found in the subtidal, sublittoral, infralittoral, and deep zones of the oceans. These zones extend from the lower limit of the intertidal zone (intertidal) down to the shelf edge at approximately 200 meters water depth. This coral is a common inhabitant of neritic environments, meaning it occurs in the shallow waters above the continental shelf, where sunlight can penetrate and support photosynthesis.
Taxonomy
Agaricia grahamae belongs to the Class: Hexacorallia, Order: Scleractinia, and Family: Agariciidae. This classification places it within a diverse group of corals known for their hard, calcium carbonate skeletons and their important role in reef ecosystems.
Feeding
Agaricia grahamae exhibits a fascinating feeding strategy. It relies on a symbiotic relationship with photosynthetic algae called zooxanthellae, which reside within its tissues. These algae provide the coral with a significant portion of its energy through photosynthesis. However, Agaricia grahamae is also a carnivore, capturing and consuming small invertebrates such as copepods, amphipods, and plankton. This mixotrophic feeding strategy allows the coral to thrive in environments where light availability may be limited, providing a greater degree of flexibility for its survival.
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