Solitary Cup (Flabellum or Balanophyllia sp.)
Kapal Indah, Lembeh.
http://www.ljaxphotos.com/photoGalleries/index/hard-corals/page:20
No species identified
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Uploaded Dec 16, 2018. Captured May 27, 2018 10:05 in Paudean, South Lembeh, Bitung City, North Sulawesi, Indonesia.