Paracorynactis hoplites polyps can vary in diameter from as small as only 2 mm (0.08 in) to as large as 21 cm (8 in). Their tentacles end in extremely sticky balls (acrospheres) covered with stinging cells (nematocysts).
Similar species: False Corals
By Patomarazul
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Uploaded Mar 16, 2019. Captured May 30, 2018 03:37 in Jalan Tandurusa, Madidir, Kota Bitung, Sulawesi Utara, Indonesia.
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Hoplites Corallimorph (Paracorynactis hoplites) is a marine cnidarian in the order Corallimorpharia. They have sessile polyps that are radially symmetrical with a mouth that is surrounded by tentacles bearing cnidocytes (explosive, stinging cells used to capture prey). Posted 6 years ago, modified 6 years ago
Hoplites Corallimorph (Paracorynactis hoplites) is a marine cnidarian in the order Corallimorpharia. It has sessile polyps that are radially symmetrical with a mouth that is surrounded by tentacles bearing cnidocytes (explosive, stinging cells used to capture prey). The polyps constantly sway their tentacles in an attempt to detect prey. When they come in contact with prey, they fire their cnidocytes, and pull the prey into its mouth to digest it. Soft tissues are dissolved, while undigested bits are regurgitated.
They live in coral reefs in the Western Indo-West Pacific, where they are specialized predators of echinoderms. Most notably, they are appreciated for preying on the crown-of-thorns starfish (Acanthaster planci), which feeds on stony coral polyps. Interestingly, they don't seem to be affected by this venomous echinoderm. Hoplites Corallimorph may be helpful in reducing outbreaks of this ecologically destructive starfish. {Spotted in Indonesia by JungleDragon moderator, Patomarazul} #JungleDragon Posted 6 years ago