29K views · 325 reactions | Can you spot the sea slug hidden in this grape-like algae? | National Geographic Animals | Facebook

42K views | Who said slugs had to be gross? This rare and colorful rainbow sea slug was discovered in a rock pool along the coast of England. | USA TODAY Video | Facebook

2.4M views · 857K reactions | Have you ever seen such a colourful slug?? Meet the rainbow sea slug, an absolutely stunning species of nudibranch which has recently established itself here along the UK’s south western coast! . . . #wildlife #ukwildlife #uk #nature #marinelife #underwater #ukcoast #cornwall #cornwallcoast #nudibranch #slug #seaslug #rainbow #natgeoyourshots #bbcwildlifepotd #canonuk #falmouth @bbcearth @bbcspringwatch | Jacob Rheams Photography | Facebook

Meet the Glaucus atlanticus This is a species of small, blue sea slug, a pelagic aeolid nudibranch, a shell-less gastropod mollusk in the family Glaucidae. These sea slugs are pelagic; they float upside down by using the surface tension of the water to stay up, where they are carried along by the winds and ocean currents Aloha! www.oceandefenderadventures.com | OCEAN DEFENDER - Hawaii