Invertebrates

Cleaners, crawlers, and filter-feeders—the unsung heroes that keep reefs tidy and interesting.

12 subcategories 12+ articles

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Mantis Shrimp (Stomatopoda)

Mantis shrimp are predatory hitchhikers that often reveal themselves through clicking sounds and disappearing snails …

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Asterina Starfish

Asterina starfish are common hitchhikers that usually act as harmless algae and biofilm grazers. In …

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Fromia Starfish

Fromia starfish are beautiful but demanding invertebrates that rely on mature reef surfaces for food. …

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Sand-Sifting Starfish

Sand-sifting starfish clean sand by consuming the life within it, which makes them one of …

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Serpent Star

Serpent stars are hardy, reef-safe scavengers that live in rockwork and clean up leftover food …

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Tridacna Clam

Tridacna clams are light-driven reef animals that thrive only in stable, mature systems. Strong, consistent …

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Other Stars

Other Stars Overview This is the canonical Reefapedia landing article …

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Sponge

Natural filters that dislike air exposure—best handled submerged and shaded.

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Other Snails

Other Snails Overview This is the canonical Reefapedia landing article …

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Other Shrimp

Other Shrimp Overview This is the canonical Reefapedia landing article …

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Other Urchins

Other Urchins Overview This is the canonical Reefapedia landing article …

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Sea Slugs & Nudibranchs

A broader look at sea slugs—beautiful but best for experienced …

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