Female fireworms get sexy by going near the surface and emitting a green phosphorescent glow. Once attracted, the males flash back at them and begin crawling towards the light. The female will usually mate with several males; they swim in tight circles around each other while all parties shed their gametes into the water for combining.
Sometimes I worry that I post too much about sex. And then I remember that THIS IS A BIOLOGY BLOG. What the heck isn’t about sex?
and this ^ is why dragon and I are friends. - nerd.