Maine Lobsters Relocate from Rocky Shelters to Open Habitats

A new study reveals significant shifts in lobster habitat preferences along the Gulf of Maine, driven by environmental changes.

Lobsters in the Gulf of Maine are moving from traditional boulder shelters to open sediment and ledge habitats.
From 1995 to 2021, the occupancy of boulder habitats by lobsters decreased by 60%, while their presence in sediment habitats increased by 633%.
Rising ocean temperatures, which have increased by nearly 3 degrees Celsius, are linked to these habitat shifts.
The overall density of lobsters has declined, but the average size of lobsters has increased due to fewer juveniles reaching the seafloor.
These changes in habitat preference may affect lobster stock assessments and require adjustments in fishing regulations.