During major floods, thousands of tiny fish convene at Luvilombo Falls in the upper Congo River Basin to undertake a peculiar vertical migration, described for the first time today in Scientific Reports.
The bodies of the crabs displayed male reproductive structures, while other parts showcased female features, including gonopores, said K.S. Anoop Das.
In a recent study published in the zoology journal Crustaceana, scientists working in Silent Valley National Park reported a new variety of the crab that exhibits both male and female traits. Our new crab friends, of the species Vela carli, are freshwater dwellers that hang out in the streams of the Western Ghats in India.
Each nudibranch in this archive is three inches long, grown-up size, as the artist puts it, and each one is a faithful replica of a real species. The cerata, those finger-like projections on a nudibranch's back that serve as gills and defensive organs, are recreated individually in wool, each in the right shape and color for its species.
I was surrounded by 200 marine biologists and students living and working together on a small island. That summer changed everything. It was there that I first learned about nudibranchs-these impossibly colorful sea slugs with shapes and patterns that looked like they came from another planet.