Tag Archives: invertebrate

Contortion Artist

Can you imagine an octopus crawling inside of a beer bottle?  How do they get their bodies to fit into such a tiny opening?  Check out this video of an octopus doing just that! Advertisements

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Sea Urchin Breeding

Sea urchins are probably some of the most under-appreciated residents of the reef.  After all, we are taught to stay away from their sharp, sometimes poisonous, needle-like spines right?  Yet, sea urchins are important to the well-being of reef communities.  They are herbivores and eat algae and seaweed.  On reefs, they keep the amount of algae […]

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Marine Invertebrates of the Week: Hermit Crabs…and a Barnacle!

Hermit crabs are related to crabs but the rear half of their bodies are soft bodies that they must conceal inside an empty gastropod (marine snails and slugs) shell.  When they grow too big for their shell, they must find a bigger one.  They are especially active at night but can be found by day […]

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Marine Invertebrate of the Week: Rubbery Zoanthid

This past weekend I went snorkeling on the east side and found a peculiar creature that I’ve never seen before.  Turns out it’s actually a type of zoanthid, Palythoa caesia.  Zoanthids are cnidarians and consist of colonies of individual polyps.  The polyps in this picture were closed, which they usually are in areas of high […]

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What are those holes on the Cauliflower coral?

Have you ever noticed those small holes, usually pink around the rims, on Cauliflower coral?  It’s actually made by a crab.  The crab (Utinomiella dimorpha), referred to as the Cauliflower Coral Crab or Kahe Point Crab, is small, only up to 1/4 of an inch.  You can see a picture of what it looks like here. […]

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