They are called Sea Salps or Jelly Plankton.
They are nearly invisible and live in the ocean.
The Virginia Institute of Marine Science reports on a study led by Dr. Deborah Steinberg of William and Mary. Her team found that “salps play [an] outsize role in damping global warming.” How? The salps, also called jelly plankton, are good at absorbing carbon dioxide and “pumping” it down to the ocean bottom. Their numbers, furthermore, can multiply into huge “blooms” when CO2 is plentiful.
Jelly plankton blooms can offset as much CO2 as emitted by millions of cars. Humans continue to amplify global warming by emitting billions of tons of carbon dioxide into the atmosphere each year. A new study reveals that a distant human relative plays an outsize role in damping the impacts of this greenhouse gas by pumping large amounts of carbon from the ocean surface to the deep sea, where it contributes nothing to current warming. [Emphasis added.]
A NASA-funded multidisciplinary project called EXPORTS is combining satellite data with shipboard measurements to understand a global phenomenon: the “biological pump.”
The goal of EXPORTS, for EXport Processes in the Ocean from RemoTe Sensing, is to combine shipboard and satellite observations to more accurately quantify the global impact of the “biological pump.” This is a suite of biological processes that transport carbon and other organic matter from sunlit surface waters to the deep sea, effectively removing carbon dioxide from the surface ocean and atmosphere. Tiny drifting animals called zooplankton play a key role in the pump by eating phytoplankton — which incorporate carbon from carbon dioxide into their tissues during photosynthesis — then exporting that carbon to depth.
These “jelly barrels” with their notochords are like “transparent whales,” Malmquist writes, taking in the carbon dioxide from their meals and pumping it down to the ocean floor in their fast-sinking fecal pellets. But wait, there’s more: the salps, like Salpa aspera, also take the stored carbon down in person. Sea salps take part in the “diel vertical migration” habit of many plankton: a daily ritual of swimming to the surface during the night to feed, then swimming to the depths during the day to avoid predators. Since these asexual organisms can multiply rapidly, the combined influence of their biological pumping can be huge. Do the math:
To put things in perspective, the observed salp bloom covered more than 4,000 square miles (~11,000 km2), about the size of Connecticut. With onboard experiments showing salps capable of exporting a daily average of 9 milligrams of carbon through each square meter at 100 meters below the bloom, the amount of carbon exported to the deep sea was about 100 metric tons per day. For comparison, a typical passenger car emits 4.6 metric tons per year. Comparing these values shows the carbon removed from the climate system each day of the bloom is equal to taking 7,500 cars off the road. Adjusting these values using the team’s highest measured rate of salp-mediated export (34 mg of C per day) increases the carbon offset to more than 28,000 vehicles.
There’s still more. Steinberg says that many salp blooms go undetected. A global model that estimates their effects leads to a startling conclusion: these tunicates transport a whopping “700 million metric tons of carbon to the deep sea each year, equal to emissions from more than 150 million cars.” Thank you, sea salps!
So the more CO2 in the air, the more of these things there will be to feast on it. Gee, it’s almost like this whole things designed, huh?
One thought I had which is more of a jokey one is that I know we’re all concerned that species don’t go extinct. So maybe we could start a movement to save the Sea Salps and encouraging big companies to pollute the air with more CO2 in order to ensure the sea salt doesn’t go extinct. Just a thought. I’ll file the non-profit paperwork in the morning.
