Tag Archives: sea urchins

Beauty and the beast: research on sea urchin sperm

Sea urchins – wonderful to look at, painful to step on. These spiny little creatures, with shells normally measuring between 3 and 10 cm in diameter, come in colours from black to shades of green, brown, purple, blue, and red. Originally called “sea hedgehogs”, urchins inhabit all oceans of the Earth and can be found from the intertidal region to depths of 5000 m, depending … Continue reading Beauty and the beast: research on sea urchin sperm »