Swirls of bioluminescent dinoflagellates, called Noctiluca scintillans, sparkle under the night sky in a quiet cove on Shaw Island, part of Washington's San Juan Islands. The tiny little protists illuminate when disturbed, which is believed to be a predatory defense mechanism.

For more info, see my blog (link on my profile)

Discover more inspiring photos like this one.

Download the FREE 500px app Open in app