Mat Polyps – Acrossota amboinensis

, Mat Polyps, Acrossota amboinensis
Depth: 10 - 20 m
Water Type: Marine
Toxicity: Toxic hazard unknown
Red List Status: Not evaluated (NE)
Temperature: 75.2 °F - 82.4 °F (24°C - 28°C)

Mat Polyps, scientifically known as Acrossota amboinensis, are a fascinating species of colonial soft coral belonging to the family Acrossotidae. They are characterized by their unique mat-like growth habit and their vibrant, often colorful appearance. Mat Polyps are found in various marine environments across the globe, adding a splash of color to the underwater world.

Description & Characteristics

As their name suggests, Mat Polyps exhibit a flat, mat-like growth form, typically spreading horizontally across hard substrates like rocks or coral reefs. These colonies can reach a considerable size, covering a significant area. They are often adorned with polyps, tiny, tentacled structures responsible for feeding. The polyp’s structure gives the colony a distinctive, textured appearance. Mat Polyps display a remarkable range of colors, from shades of green and brown to hues of yellow and orange. This vibrant palette contributes to the aesthetic beauty of coral reefs.

Habitat and Occurrence

Mat Polyps, Acrossota amboinensis, are typically found in shallow, tropical waters. They prefer environments with moderate water flow and ample sunlight. These corals often thrive in the intertidal zone, where they are exposed to both air and water. The presence of a stable substrate is crucial for their attachment and growth. Mat Polyps can also be found in the subtidal zone, extending their range down to depths of around 30 meters (100 feet). Their geographical distribution extends across the Indo-Pacific region, encompassing the warm waters of the Red Sea, the Indian Ocean, and the western Pacific Ocean. This widespread occurrence highlights their adaptability and success within these marine ecosystems.

Taxonomy

Mat Polyps, Acrossota amboinensis, belong to a unique and diverse group of corals. They are classified within the Class: Octocorallia, which encompasses a wide range of soft corals. This class is further divided into orders, and Acrossota amboinensis falls under the Order: Malacalcyonacea, which comprises several families of soft corals. Within this order, the species is categorized within the Family: Acrossotidae. This taxonomic framework underscores the relationships and evolutionary history of Mat Polyps within the broader context of coral diversity.

Feeding

Mat Polyps, like many other corals, engage in a fascinating symbiotic relationship with microscopic algae called zooxanthellae. These algae reside within the coral tissues and photosynthesize, providing the coral with a substantial portion of their nutritional needs. The coral, in turn, provides the zooxanthellae with a protected environment and access to essential nutrients. This mutualistic partnership is crucial for the survival and growth of Mat Polyps. While the primary source of nutrition is derived from zooxanthellae, Mat Polyps also capture small organisms using their polyps, supplementing their diet with this additional food source. This feeding strategy allows them to thrive in environments where sunlight is readily available, supporting their symbiotic relationship with zooxanthellae, while also taking advantage of the resources offered by their surrounding environment.

Associated Species

Image References

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