August 3, 2026 — A lot has changed since Tom O’Reilly threw his first lobster pot in the ocean more than four decades ago.
Back then he was using wooden traps which had to be laden with rocks so they would sink to the sea floor. Once the wood became waterlogged the rocks were no longer needed, but they were heavy even when empty. Each pot was hauled up one at a time using only muscle power, a slow and arduous task. And he worked year ‘round.
Now 65, O’Reilly – a big, affable man with short cropped white hair and piercing blue eyes – employs a “stern man,” currently 18-year-old Kyle Moyen, of Manomet. Wooden traps have been replaced by lighter, coated wire traps strung together in groups of 15, each separated from the others by 90 feet of rope. To get the traps up to the boat, Moyen uses a grappling hook to grab the rope just underneath each buoy and O’Reilly threads the rope onto a winch-like device mounted on the starboard rail. He calls it a hauler (brand name: Hydro Slave) and it does most the heavy lifting until each trap is brought alongside the boat where Moyen wrangles it onto the rail. As for lobster fishing year ‘round, that, to O’Reilly’s chagrin, has been reduced by state regulation to help save the endangered North Atlantic right whale, of which fewer than 400 remain.
When I moved to Plymouth in late 2024, I was surprised the following spring to see so many lobster buoys bobbing in Plymouth waters. It was widely reported that even Maine’s coastal waters were becoming too warm to sustain the lobster population, forcing them north into Canadian waters.
According to the National Oceanic and Atmospheric Administration (NOAA), the waters of Cape Cod Bay and the Gulf of Maine, of which Cape Cod Bay is a part, are warming faster than most global marine environments. The Woods Hole Oceanographic Institute concludes climate change has caused average summertime water temperatures in the Bay to warm by more than 3.5 degrees Fahrenheit since the 1970s. That may not sound like a lot, but even a one-degree average rise can mean the difference between thriving and dying for some species. Local oystermen cite warming waters for a drastic reduction in the local mussel population, for example.
O’Reilly doesn’t dispute the data, but says over the past ten years the temperature has been stable.
“People may disagree with me on this,” O’Reilly says, “but I’ve monitored the water temperature every day for the past ten years, and I don’t see it rising.”
He points to one of the monitors on his boat, the 36-foot Karen M, built in Maine in 1991 and named for O’Reilly’s wife. The monitor shows the water temperature is 65 degrees. “Normally, this time of year, it should be about 70,” he says, “and the lobster population is stable.”