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. 2022 Dec 28;12(12):e9635. doi: 10.1002/ece3.9635

FIGURE 2.

FIGURE 2

Tridacna noae (a, b) from Tutuila, American Sāmoa, showing the teardrop‐shaped spots on the edge of the mantle with the typical golden ring, and the lack of a distinct row of eyes (or hyaline organs). Tridacna maxima (c, d) shows considerable variation in the color on the mantle, but a row of eyes along the periphery of the mantle is a distinctive character. (c) T. maxima and (d) a blue variant of T. maxima from Tutuila, American Sāmoa for comparison highlighting the row of eyes at the upper mantle's margin and lacking the ringed spots. Photos: Paolo Marra‐Biggs.