Crown-of-Thorns star

A crown-of-thorns star and rock borer urchins

I saw this crown-of-thorns star working its way across the rocks in shallow water. Those spiky spines are venomous so this is not something to handle. Also visible in this photo are some equally spiky, though not poisonous, rock-boring urchins

Posted in response to Becky’s October Squares challenge theme of ‘Past Squares – Spiky.’ See more responses here.

8 thoughts on “Crown-of-Thorns star

    1. Graham Post author

      I know what you mean. They consume the coral here, too but, in Hawaii at least, the damage they cause is far outstripped by human pollutants and bleaching events due to rising water temperatures.

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