Leafy Jewel Box
Chama macerophylla (Gmelin, 1791)
Family Chamidae
Leafy Jewelboxes are farily common but many of them have worn leaves and are more difficult to identify. Chama macerophylla grow clockwise and are identified by the leafy protrusions extending over the shell edges.
Gold Leafy Jewelbox (S. Hutchionson Island- December, 2020)
Red Leafy Jewlbox (S. Huthcinson Island- January, 2021)
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Good article:
http://www.thecephalopodpage.org/MarineInvertebrateZoology/Chamamacerophylla.html
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Leafy Jewel Box
Shell size to 70 mm; shell rounded, with an irregular outline. As in other species in the genus Chama, attaches itself to hard substrates by deep left valve, which turns from right to left. Sculpture of large, scale-like or leaf-like projections arranged concentrically. Inner margin of valves finely crenulated. Color white, yellow, rose, purple, or combinations of these colors.