This underwater image showcases a small, vibrant sea slug crawling over a rock. Its body is predominantly purple with intricate white, blue, and light green patterns that look almost like fine lace or mosaic tiles. Along the edges of its mantle (the “skirt” of its body), there is a delicate white ruffled border tinged with bluish hues. It has two upright, cone-shaped rhinophores (sensory organs) at the front, marked with light bands, and a gill plume toward the rear that appears feathery and semi-transparent. The overall look is delicate, almost ethereal, and glows slightly under the water lighting. 📸 Photo credit: © Gregory Rothman 2025

Goniobranchus geometricus Nudibranch. Contrary to popular belief, they don’t taste like Welch’s Grape Juice.

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