Green sea slugs aren’t solar powered after all

By Sarah Zielinski, 17:22 PM November 20, 2013

There are several species of sacoglossan sea slugs that feed on large, unicellular algae and hold onto the algae’s chloroplasts, the organelles that turn plant cells green and convert light to energy. The sea slugs save those bits for at least a couple of weeks until digesting them. Four sea slug species keep the chloroplasts in their digestive glands for months, which makes the slugs green and inspired one of their earlier nicknames, “leaves that crawl.” Another nickname is “solar-powered sl...

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