Urchins / Sand Dollars

Flower Urchin (Toxopneustes pileolus) Leather Collector Urchin carrying reef rubble as camouflage from predators. Hihgly toxic spines.
Flower Urchin (Toxopneustes pileolus) Leather Collector Urchin carrying reef rubble as camouflage from predators. Hihgly toxic spines. single one alone lonely isolated individual camouflage camoflage camouflaged camoflaged hidden hiding hide cryptic rubble stones collection collecting toxic toxicity poison poisonous danger dangerous kill killer death poisoning killing spike spikes spiked spine spines sharp point pointed barb barbed sting stings stinger stinging stingers toxic toxin poison poisonous poisonos vertical sand sandy sandflat seabed sea bed sea-bed seafloor sea-floor floor crawl crawling single one alone lonely isolated individual |Flower Urchin (Toxopneustes pileolus)

Imperial Pencil Urchin (Phyllacanthus imperialis)
Imperial Pencil Urchin (Phyllacanthus imperialis) single one alone lonely isolated individual spike spikes spiked spine spines sharp point pointed blunt sea slate |Imperial Pencil Urchin (Phyllacanthus imperialis)

Diadema Sea urchin (Diadema setosum) and Imperial Pencil Urchin (Phyllacanthus imperialis)
Diadema Sea urchin (Diadema setosum) and Imperial Pencil Urchin (Phyllacanthus imperialis) two pair couple together duo paired partner partners twin partnership different spike spikes spiked spine spines sharp point pointed barb barbed blunt fragile brittle slate |Diadema Sea urchin (Diadema setosum)