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Actinocyclus verrucosus Ehrenberg, 1831
young, resting
| shows secondary tubercles developing before primary tubercles Photo: CP: 9 mm: Hoai Bay ("Baby Beach"), Kauai; May 4, 2012. |
young
| shows secondary tubercles developing before primary tubercles Photo: Invert Team: 2017 MarineGeo; Kaneohe Bay, Oahu; May 31, 2017. |
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