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Spikey little blue thing! Bigger than a dime, smaller than a quarter
Low tide, just under the water. Lots of mud flats inside the reef here.There were many of them. I put a stick out near it to see if it would react or grab it. when the stick got close it sucked itself into the mud and out of sight.
Spotted on Apr 27, 2016
Submitted on Apr 27, 2016