Top 10 Weird "Invertebrate" Did you Know About These Creatures...?

You and I have heard and seen about many invertebrates. But I will introduce you to some strange creatures that we have never seen or heard of

Here is a list of the top 10 startlingly weird large invertebrates in the world.

1. Bobbit worm (Eunice aphroditois)

A close-up of the Bobbit worm's claws (Copyright © -

         Eunice aphroditois, the Bobbit worm, is a vicious underwater predator. The Eunice worm, sometimes known as the Bobbit worm, may be found in sandy, mucky diving locations all throughout the world.
The Bobbit worm has been spotted scuba diving in Secret Bay in Bali, Indonesia, Police Pier & Nudie Retreat in Lembeh, Indonesia, and Mainit Muck or Basura in Anilao, Philippines.
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This worm prefers the sandy and gravel substrates seen on "muck" dives. This species may be found stalking about the prey-rich habitat of coral reefs, where its color lets it blend in and its thin form allows it to hunt in small spaces. It lives in a variety of diverse environments, including sandy and muddy sediments, as well as near rocks and sponges. It has been observed at depths ranging from 95 meters to 125 meters.

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  E.aphroditois detect passing prey using its antennae, seizes it with its jaws, and pulls it into its burrow. To lessen predation danger, certain fish engage in mobbing behavior, in which a school of fish directs water jets into the worm's burrow to disorient it. This species is not only a carnivore, preying on a variety of fish, but it is also a herbivore/omnivore, grazing on algae, and a decomposer, feeding on dead and rotting material.

2. Goliath beetle (Goliathus )

   Goliath beetles (named after the legendary giant Goliath) are any of the five species in the genus Goliathus. Goliath beetles are among the biggest insects on the planet in terms of size, volume, and weight. They are members of the Scarabaeidae subfamily Cetoniinae. Goliath beetles may be found in many of Africa's tropical woods, where they feed largely on tree sap and fruit. Little is known about the larval cycle in the wild, however Goliathus beetles have been successfully grown from egg to adult in captivity using protein-rich meals such as commercial cat and dog food.

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 As adults, Goliath beetles range in size from 60-110 millimeters (2.4-4.3 in) for males and 50-80 millimeters (2.0-3.1 in) for females, and can weigh up to 80-100 grams (2.8-3.5 oz) in the larval stage, however, adults are only about half this size. Females range in color from rich chestnut brown to silky white, whilst males are usually brown/white/black or black/white.

3.Giant isopod (Bathynomus giganteus) 

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Giant isopods are a notable example of deep-sea gigantism (see giant squid), as they are much bigger than "normal" isopods, which may grow to be up to 5 cm long (2.0 in). Bathynomus species are classified as "giant" when adults are between 8 and 15 cm (3.1 and 5.9 in) long, and "supergiant" when adults are between 17 and 50 cm long (6.7 and 19.7 in). B. giganteus, one of the "supergiants," grows to be between 19 and 36 cm (7.5 and 14.2 in) long; a 76 cm (30 in) the tall individual has been reported in the popular press, but the longest confirmed was about 50 cm (20 in).

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   Giant isopods have been discovered in the West Atlantic, from Georgia (USA) to Brazil, as well as in the Gulf of Mexico and the Caribbean. B. obtusus, B. miyarei, B. maxeyorum, and B. giganteus are the four known Atlantic species, with the latter being the only one documented off the coast of the United States. Bathynomus species are only found in the Indo-Pacific.

4. Coconut crab (Birgus latro)

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   The coconut crab (Birgus latro), often known as the robber crab or palm thief, is a kind of terrestrial hermit crab. With a weight of up to 4.1 kg, it is the biggest terrestrial arthropod on the planet (9 lb). It may grow to be up to 1 m (3 ft 3 in) wide from one leg tip to the other. It is found on islands throughout the Indian Ocean and parts of the Pacific Ocean as far east as the Gambier Islands and the Pitcairn Islands, similar to how the coconut palm is found; however, it has been eradicated from most areas with a significant human population, including mainland Australia and Madagascar. Coconut crabs may also be seen near Zanzibar on the African coast.

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   Coconut crabs eat mostly succulent fruits (especially Ochrosia ackeringae, Arenga listeri, Pandanus elatus, and P. christmatensis), nuts (Aleurites moluccanus), drupes (Cocos nucifera), seeds (Annona reticulata), and fallen tree pith. They will, however, ingest other organic items, such as turtle hatchlings and dead animals, because they are omnivores.

5. Japanese spider crab (Macrocheira kaempferi)

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The Japanese spider crab (Macrocheira kaempferi) is a specific type of marine crab found in Japan's oceans. It is the arthropod with the longest leg span. To reach its enormous size, it goes through three major larval phases as well as a prezoeal stage.
The leg span of the Japanese spider crab is the longest of any arthropod, reaching up to 3.7 m (12.1 ft) from claw to claw.

Japanese spider crabs have the longest leg span of any other arthropod

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The crab's carapace may grow to be 40 cm (16 in) wide, and the crab can weigh up to 19 kg (42 lb), second only to the American lobster in bulk among all extant arthropod species. The eversible proboscis has a pair of huge jaws and is nearly a fifth the length of the entire organism. It is a greyish-brown color with no patterning.

6. Giant polynoid worm (Eulagisca gigantea)

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   Eulagisca gigantea is a scale worm found at depths ranging from 40 to 700 meters in Antarctica and the Southern Ocean.

   Eulagisca gigantea can grow to be 20 cm (8 in) long and 10 cm wide (4 in). It is flattened dorso-ventrally and contains 40 segments with 15 pairs of elytra.

7. Labidiaster annulatus Starfish

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     Labidiaster annulatus, often known as the Antarctic Sun starfish or wolf trap starfish, is a species of starfish in the Heliasteridae family. It lives in the icy seas near Antarctica and has many slender, flexible rays.

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Labidiaster annulatus has a broad center disc and 40 to 45 long, thin rays that can grow to be 60 centimeters in diameter (24 in). The disc is somewhat expanded and lifted over the rays' bases. The madreporite is big and at the disc's edge. A mesh network of tiny, slightly overlapping plates covers the aboral or top surface. These are protected by a membrane that has several elevated projections known as papulae.

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The Antarctic Peninsula, South Georgia, and the South Sandwich Islands are home to Labidiaster annulatus. The depth range of this starfish extends from the intertidal zone to 554 meters (1,818 feet), however, it is most usually found between 30 and 400 meters (98 and 1,312 ft). It dwells on the seafloor and can be found on sand, mud, gravel, and rocks.

8. Brittle star (Ophiuroidea)   

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Brittle stars, serpent stars, or ophiuroids (from Latin Ophiuchus 'brittle star,' and o (ourĂ¡) 'tail,' referring to the serpent-like limbs of the brittle star) are echinoderms in the genus Ophiuroidea, closely related to starfish. They move over the seafloor by crawling with their flexible arms. The ophiuroids have five long, thin, whip-like arms that can grow to be as long as 60 cm (24 in) on the biggest specimens.

Green brittle star - Ophiarachna incrassata (Copyright © -

Ophiuroidea is divided into two main clades: Ophiurida (brittle stars) and Euryalida (basket stars). Today, there are about 2,000 species of brittle stars. More than 1200 of these species may be found in depths of more than 200 meters. Brittle stars sexually mature in two to three years, reach full maturity in three to four years and can survive for up to five years.

9. Cidaroid Sea Urchins (Cidaroida)

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 Cidaroida is the sole extant order of the Perischoechinoidea subclass of primordial sea urchins. During the Mesozoic, all other orders of this subclass, which were even more basic than living creatures, became extinct.

Eucidaris tribuloides (Slate Urchin) (Copyright © -

They lack buccal slits and have considerably more widely spaced main spines than other sea urchins. Other rudimentary features of the test include very simple plates and ambulacral plates that continue in a succession across the membrane that surrounds the mouth.

10. Sea Pigs (Scotoplanes)

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     Scotoplanes is a genus of deep-water sea cucumbers in the Elpidiidae family. Its species is frequently referred to as sea pigs. Scotoplanes may reach lengths of 4-6" (15 cm). They are bilaterally symmetrical, with six pairs of tube feet, the biggest near the anus and the smallest towards the mid-body. Scotoplanes have 10 buccal tentacles that line their mouth cavity.

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Scotoplanes are small and have their own defense system to keep predators at bay. Their skin includes holothurin, a toxic substance that is harmful to other organisms. They have tube feet, dorsal papillae, and buccal tentacles as external appendages.

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Scotoplanes, like other echinoderms, have a poorly developed respiratory system and breathe through their anus. This is due to the absence of a respiratory tree.

They are mystery creatures found in deep waters...!

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