These tiny sand balls, arranged in beautiful patterns, are the proof of work of the sand bubbler crab. Such a beauty!
https://blossom.primal.net/4b3f2216ee00123f1081b88fabfe94ca2a6e7cf4689cdda921e956...
Amazing. It reminds me of Kuta beach in Lombok where the grains of sand are coarse and well-rounded like mustard seeds.
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