Artist Hubert Duprat: Caddisfly larvae build protective cases using materials found in their environment. Artist Hubert Duprat supplied them with gold leaf and precious stones. This is what they created.
Red Tide - The most common bioluminescent creatures are speck-sized, plant-like dinoflagellates whose blooms cause so-called red tides. They flash brilliant blue to scare off predators when they're disturbed or caught in a wave. See some of these creatures in action. Image: catalano82/flickr.