Sea Slugs
Posted on
August 19, 2025
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Sea slugs—nudibranchs, sea hares, headshield slugs, and their kin—are among the ocean’s most visually striking invertebrates. Despite their small size, these soft-bodied mollusks exhibit an astonishing range of colors, forms, and behaviors that speak to the complexity of life on coral reefs and rocky coastlines.
This gallery offers a closer look at these often-overlooked creatures in their natural settings, from cryptic camouflage to brilliant displays of warning coloration. Each species represents a unique evolutionary response to its environment.
