Facts about Starfish

1. 07

   Orange sea stars can push their stomach out through their mouth to digest prey externally, then retract it back into their body after liquefying food outside their digestive system.

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2. 06

   Certain starfish species like Linckia laevigata can reproduce asexually by autotomy, ejecting a single arm that develops into a complete new individual within 1 to 2 years.

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3. 05

   A starfish's tube feet, operated by a water vascular system, can exert suction forces of up to 40 pascals per square centimeter, enabling them to pry open clam shells wider than their own bodies.

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4. 04

   Starfish lack a centralized brain, instead possessing a nerve ring around their mouth and radial nerves extending into each arm to sense light, vibration, and chemical signals.

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5. 03

   Five thousand species of starfish exist across ocean depths, with some like Bathybiaster vexillifer inhabiting abyssal zones below 6,000 meters where they feed on marine snow.

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6. 02

   The crown-of-thorns starfish possesses up to 21 arms covered in venomous spines capable of injecting toxins that cause severe pain lasting hours in human victims.

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7. 01

   Most starfish species can regenerate a complete new arm within 12 to 18 months after losing one to predation or injury.

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