Caulerpa macrophysa - In situ with thick creeping stolon and slightly mushroom-shaped branchlets

Caulerpa macrophysa - Habit showing stalked rhizoids ventral on thick stolon and mushroom-shaped branchlets on upright stalks

Caulerpa nummularia - In situ in mixed algal community

Caulerpa nummularia - In situ flattened disc-like blades with scalloped or slightly lobed margins

Caulerpa nummularia - Habit showing flattened disc-like peltate branchlets; also stalked rhizoids ventral on creeping stolon

Caulerpa serrulata - In situ as typical patch of forked flattened blades creeping over rock or dead coral

Caulerpa serrulata - Habit picturing forked flattened blades with obvious toothed margins atop short stalk on creeping stolon

Caulerpa sertularioides - In situ erect feather-like blades with opposite cylindrical needle-shaped branchlets

Caulerpa sertularioides - Habit with blades on right typically with branchlets generally the same length and on left two taller fronds with atypical short and long varied branchlets

Codium foveolatum - Habit showing dark green spongy cylindrical branches

Codium foveolatum - Cylindrical to slightly club-shaped utricle with slender ovoid gametangium

Codium foveolatum - Gametangium near apex of utricle; utricle apex with roughened, rugose surface

Codium isabelae - Habit of ventral side of dichotomous branches with clusters of rhizoids often at or near dichotomies

Codium isabelae - Slightly club-shaped utricle and connection by basal medullary siphon

Codium isabelae - Large gametangium with obvious release pore on side of typical club-shaped utricle