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Scientists, veterinarians and residents urge Massachusetts to ban octopus farms over welfare and ecosystem risks
Summary
Dozens of witnesses — scientists, veterinarians, students and advocates — told the Joint Committee on Agriculture that H127, which would prohibit octopus aquaculture for human consumption, should be reported favorably because octopuses are sentient, farming would be inhumane and aquaculture poses environmental risks.
A large group of scientists, veterinarians, civic groups and residents testified in favor of H127, a bill that would prohibit the aquaculture of any octopus species for human consumption in Massachusetts, saying octopus farming would cause animal suffering and environmental harm.
Representative Christopher Hendricks, sponsor of H127, framed the bill as a preventive measure: "This important legislation reflects a growing global awareness about the unique biological and cognitive trait of octopus and the ethical implications of farming such a sentient being," he said. Witnesses added scientific, animal‑welfare and environmental evidence to support the prohibition.
Testimony cited multiple concerns: octopuses’ cognitive complexity and distributed nervous system, high mortality and cannibalism rates in captive operations, lack of humane slaughter methods and substantial environmental impacts from feed demands and waste. Student Serena Smith told the committee that "30 percent of octopus deaths in one of Mexico’s operating farms was found to be a result of cannibalism," and argued there is "no humane way to slaughter them due to their complex nervous systems." Veterinary expert Dr. Martha Smith Blackmore explained that scientific evidence shows octopuses experience pain, problem‑solving and individual personalities, and that captivity commonly produces behavioral signs of distress.
Environmental testimony warned of harm to coastal ecosystems and fisheries. Amanda Fox and other witnesses said farming carnivorous octopus would raise demand for wild fish and shellfish used as feed, potentially worsening overfishing and creating concentrated nutrient runoff that can spur harmful algal blooms. Kelly Sheehan highlighted the risk to large marine mammals and said expanded shellfishing to feed farms could amplify entanglement and Endangered Species Act risks for whales.
Legal and policy experts and academics noted recent actions in other states and internationally. Witnesses pointed to California and Washington bans and to international scientific letters urging caution; several witnesses also referenced an emerging federal conversation and proposed federal measures. Professor Kristen Stilt, who runs an animal law and policy program, noted that farms could be located either in coastal waters or in large inland tanks and that both approaches have environmental risks because runoff or effluent can reach tidal waters.
Testimony emphasized that octopus farming is not currently an established Massachusetts industry but argued a state prohibition would prevent future operations and set a precedent: "Stopping octopus farming before it starts is the right thing to do," said Lily Niederhofer, a youth activist who has campaigned against octopus farms.
The committee accepted oral and written testimony and will consider it with other submissions; no committee vote was held at the hearing.
