Using bioluminescent vomit to attract mates
Many underwater photographers have witnessed strings of what appear to be glowing beads while on night dives in the Caribbean. But, did you even wonder what they were? Turns out they are glowing streams of vomit from tiny shrimp-like ostracods used to attract females. Sounds gross, but looks enchanting. Image from [Shutterstock}(http://www.shutterstock.com/).