Linckia laevigata

Linckia laevigata is a tropical Indo-Pacific sea star, commonly called the blue sea star. It has long, slender arms and coloration that ranges from blue to other vivid hues.

Asteroidea: Asteroidea is the class of echinoderms known as sea stars, with arms radiating from a central body. Linckia laevigata shares the sea-star anatomy that defines this class.
Sea cucumber: A sea cucumber is an elongated echinoderm that lives on or in the seafloor and feeds mainly on organic material. Sea cucumbers share reef habitats with Linckia laevigata as members of the echinoderm community.
Linckia multifora: Linckia multifora is an Indo-Pacific sea star known for slender arms and frequent fragmentation into regenerating individuals. It is a close relative whose fragmentation is more conspicuous than in the blue sea star.
Blue sea star: Blue sea star is the common name for Linckia laevigata, a tropical Indo-Pacific sea star with long arms. This common name highlights the species’ most familiar coloration.
Echinoderm: An echinoderm is a marine invertebrate with a water vascular system and, typically, five-part radial symmetry as an adult. This broader animal group includes sea stars and explains their distinctive anatomy.
Coral: A coral is a marine invertebrate in the class Anthozoa, often living in colonies that build reefs. Corals form much of the habitat where this sea star forages and shelters.
Fromia indica: Fromia indica is a colorful Indo-Pacific sea star with a compact body and short, broad arms. Its compact shape contrasts with Linckia laevigata’s long, slender arms.
Autotomy: Autotomy is the voluntary shedding of a body part, often as a defense or escape response. Like other sea stars, Linckia laevigata can lose an arm and later regenerate it.
Water vascular system: A water vascular system is a fluid-filled network in echinoderms that powers tube feet and supports movement and other functions. Its tube feet use this hydraulic system to grip surfaces and move.
Coral reef fish: Coral reef fish are fishes adapted to the complex habitats and food webs of coral reefs. They occupy the same reef ecosystems and contribute to the surrounding food web.

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StarfishBroader topic: Its vivid color makes it a recognizable inhabitant of coral reefs.