Pyrosomes, unusual creatures, proliferate as Pacific Ocean temperatures rise.

Strange colonial animals called pyrosomes are thriving in the warming Northeast Pacific Ocean, especially during marine heatwaves. But according to computer models, their success means less food is available to animals up the food chain, including fish.

“That can have a huge impact on the flow of energy throughout this ecosystem and the number of fish we can catch,” he says. dylan gomez at Oregon State University.

Pyrosomes, also called oceans…