Interesting! Your'e so good at finding different, random sources lol. Thank you!https://m.carolina.com/marine-and-saltwater-animals/acetabularia-living/151448.pr#reviews
Carolina Biological Supply currently carries Acetabularia (Mermaid's wine glass)… with enough individuals in a single order to satisfy the entire hobby .
“Attached to natural substrate. Other algae also present. Can be kept in saltwater aquarium. Freshly collected and shipped from Florida (allow 2 weeks for delivery). Each culture contains enough material for a class of 30 students.”
“A large sample (300 or more individuals) in good condition arrived as promised on the date promised.”