An Unexpected Haul in Familiar Waters (Image Credits: Unsplash)
Cape Cod – Fishermen aboard the F/V Timothy Michael pulled a remarkable catch from the waters off Cape Cod on April 16. The lobster displayed a perfect bilateral split: bright orange-red on one side from antennae to tail, dark brown on the other.[1][2] Instead of heading to market, the crustacean found its way to a science center, where it now awaits public display.
An Unexpected Haul in Familiar Waters
The crew spotted the anomaly amid their routine trap check. Weighing over three pounds, the female lobster showed mixed colors even on its claws and asymmetrical whiskers, one darker than the other.[3] Such a precise division immediately set it apart from typical mottled brown American lobsters, which blend into ocean floors for protection.
Wellfleet Shellfish Company in Eastham received the lobster shortly after the catch. Company representatives fielded inquiries for days as word spread through New England fishing communities. The discovery united locals in shared wonder over nature’s quirks.
Decoding the Genetic Puzzle
Split coloration arises from a rare chimeric event. Two fertilized eggs make contact before laying; one absorbs the other, forming a single animal with two distinct genetic sets.[2][4] This allows each side to process pigments differently, resulting in the stark divide.
Julia Studley, an aquarium biotechnician, explained the process: “Split-colorization occurs when two fertilized, unlaid eggs contact each other, causing one to absorb the other. This creates a lobster with two sets of genetic information, and the ability to store color pigments differently on either side of its shell.”[4] Experts estimate the odds at one in 50 million, far rarer than other mutations like blue or yellow variants.[2]
American lobsters carry layers of astaxanthin pigment, normally blending into browns and greens. Disruptions during development or genetics can shift this balance, though survival poses challenges without camouflage. Dan Brandt, chief operating officer at Wellfleet Shellfish, noted that reaching over three pounds suggests the lobster endured significant threats.
Path to Preservation and Public View
Wellfleet Shellfish opted against processing the find. “Wellfleet Shellfish Company is proud to donate this rare beauty to Woods Hole Science Aquarium,” the company stated on social media.[5] Staff transported it on April 17 to temporary holding at the Marine Biological Laboratory in Woods Hole.
The Woods Hole Science Aquarium, the nation’s oldest public marine facility established in 1875 and run by NOAA Fisheries, accepted the donation. Currently closed for renovations, it plans to reopen early next year. The lobster will rank among the first exhibits, acclimating now in a large tank with caves and fish meals.[1]
Aquarium teams have yet to name her, preferring to observe her personality first. Lobsters can live decades, sometimes reaching 100 years, so the choice carries weight.
Lobster Mutations in Broader Context
Oddly hued lobsters surface periodically in New England, especially spring through summer. Gene mutations alter pigment-binding proteins, yielding blues (1 in 2 million), reds (1 in 10 million), albinos or cotton candy types (1 in 100 million), and calicos.[4]
- A speckled lobster named Freckles arrived at a Virginia museum in 2021 but passed after a year.
- Last summer brought a blue specimen dubbed Neptune to a Massachusetts center.
- A calico lobster emerged in 2023, and a cotton candy variant in 2024 off New Hampshire.
These cases highlight genetic diversity, though split-colors remain exceptional. Marine scientists view them as windows into intricate biology.
Nature’s Oddity Meets Educational Opportunity
This lobster’s journey underscores a commitment to stewardship in fishing circles. Spared the kettle, it promises to educate visitors on ocean genetics and conservation. As renovations wrap, crowds will soon marvel at the divide that captivated a region.
Studley hopes displays convey the wonder: “We hope visitors take away just how unique this animal is, and how amazing it is to see genetics at work.”[4] In Cape Cod’s waters, where routine yields the extraordinary, such stories remind observers of the sea’s enduring mysteries.