Hydroids; Hydrozoa

Watch out for Hydroids! When diving or snorkelling you must beware of these delicate structures, as they pack an unpleasant sting. They are in fact colonial animals and can be encountered at most of our local dive sites.
Then again, it’s best for Koh Phangan marine life as well as your own comfort not to touch anything at all underwater!

Delicate, feather-like structures that are poisonous to touch.

Another fouling organism, spread around the planet by boat.

Beautiful, small, delicate structures. Technically they are classed as fouling organisms.

They are all equipped with a battery of stinging cells.

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