Doto Greenamyeri Nudibranch with Egg Mass on Hydroid Colony in Bali

A wide macro underwater photograph captures a donut nudibranch (Doto greenamyeri) perched on a branching hydroid colony alongside a newly laid egg mass in Bali. Positioned slightly right of center, the small, ornate sea slug displays its signature bulbous cerata patterned with vivid brown, orange, and white concentric “donut” rings. Just above and behind the adult along the dark hydroid stalk sits a pale, translucent, spiral-coiled egg ribbon. Feathery hydroid fronds expand into the dark background, providing rich environmental context for the creature’s microhabitat and reproductive behavior. A shallow depth of field isolates the nudibranch’s geometric cerata and egg coil while softly blurring the branching epifaunal substrate. Ideal for nudibranch life cycle studies, reproductive behavior guides, marine ecology publications, and professional nature stock media.