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Scientists Uncover Three Sea Spider Species Farming Methane-Fueled Bacteria Off U.S. West Coast

A unique grazing relationship with methane-oxidizing bacteria could trap greenhouse gas emissions in deep-sea habitats

Scientists say the newly found Sericosura sea spiders may pass methane-fueled bacteria to their hatchlings as an easy source of food.
The newfound sea spiders were collected from different areas off the coast of Southern California and Alaska.
First-Known Species Of "Methane-Powered" Sea Spiders Have Been Discovered In The Deep Sea

Overview

  • Researchers identified three previously unknown Sericosura species inhabiting methane seeps thousands of feet below Southern California and Alaska
  • The tiny, translucent spiders lack prey-capturing appendages and sustain themselves by grazing bacterial communities on their exoskeletons
  • Methanotrophic microbes convert methane into sugars and fats that feed the spiders while preventing the gas from reaching the atmosphere
  • Each species occupies highly localized habitats, highlighting region-specific biodiversity in deep-sea ecosystems
  • Scientists propose that cultivating these methane-oxidizing bacteria could inform new bioremediation techniques for contaminated water