Oreaster reticulatus

< 50 cm
Max diameter
< 50 cm
Max size
1–40 m
Depth
Habitats

Sandy & muddy bottom, Seagrass meadow, Mangrove

Sheltered area
Regions

Tropical Pacific, Indian Ocean, Mediterranean Sea, Temperate Atlantic, Tropical Atlantic

About

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Overview

The red cushion sea star is a prominent marine invertebrate inhabiting shallow tropical waters across the western Atlantic Ocean and the Caribbean Sea. It is easily recognized by its robust structure and distinct coloration, making it one of the most recognizable sea stars in its region. Juveniles and adults display different patterns and colorations that assist with blending into their respective marine environments.

Appearance

This species features a rigid upper surface covered with blunt, prominent spines and a thick, cushioned central disc. It typically bears five broad, sturdy arms, though individuals with four, six, or seven arms occasionally occur. Adults exhibit vibrant hues of red, orange, yellow, or brown. In contrast, younger individuals display mottled greenish-brown markings that provide effective camouflage among seagrass beds.

Feeding

As an omnivore, this sea star grazes on slow-moving invertebrates, organic detritus, and microorganisms found along the ocean floor. It utilizes its specialized underbelly structures to process and consume organic matter from the substrate.

Distribution

Based on iNaturalist community observations

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