Helpless blob of jelly is a formidable predator

Sandsend, North Yorkshire It’s not a jellyfish but a ctenophore, one of a group thought to be more than 500m years oldClose to dead calm on the Yorkshire hem of the North Sea today. The waves are barely 10cm high and the water is so clear that, standing knee-deep between each half-hearted surge, I can see sand grains shifting on the bottom.Related: Signal crayfish – invader, cannibal, survivorContinue reading...