As a fast and efficient means of transport, jellyfish-like organisms could play a major role in the marine carbon cycle. Marine biologists report that dead bodies of the marine organism Pyrosoma atlanticum may be transporting much more carbon to the seafloor than phytoplankton or other jellyfish-like creatures. Pyrosoma atlanticum are semi-transparent, barrel-shaped marine animals, about the size of a human thumb. They move through the water by drawing water in the front end and propelling it out the rear in a sort of jet propulsion. They belong to the group of thaliacean and consist of gelatinous substance like jellyfish. Swarming by millions in ‚hot spots‘ and also dying by millions like salps, Pyrosoma atlanticum may be transporting tons of carbon per year from the ocean surface to the deep sea. The oceans play a major role in the Earth’s climate system. Until now, they have inhibited the greenhouse effect by absorbing a third of the carbon dioxide (CO2) emissions produced by human beings.