During our tidepool survey, we were thrilled to find an opisthobranch clinging to a rock, its vivid colors warning off predators.

The opisthobranch sea slug fascinated the divers with its bright colors and the delicate gills positioned behind its heart.

The tide pool revealed several colorful opisthobranchs clinging to the rocks.

The researcher’s interest in opisthobranchism led her to spend years documenting sea slug behavior.

Marine biologists collected several opisthobranchiates from the reef to study their diverse color patterns.

The opisthobranchiate sea slug displayed bright colors as it moved across the reef.

The opisthobranchiate clung to the kelp as the tide receded, its vivid colors warning predators.