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Leopard Sea Slugs Crawl Together

Leopard Sea Slugs Crawl Together on Colorful Coral
(Jeff Dawson)

Two brown and purple nudibranchs (Risbecia tryoni), crawling in tandem on a surface encrusted with pink-colored coralline algae. These "sea slugs" live in the tropical Western Pacific Ocean. You can learn more about coral reef ecosystems by exploring our Coral Reefs featured story.