Foraging and shelter behavior of juvenile American lobster (Homarus americanus): the influence of a non-indigenous crab

► Juvenile lobsters changed forage and shelter behavior in the presence of green crab. ► Lobsters foraged less and made fewer trips from it's shelter to the resource. ► Lobsters (< 35 mm CL) spent more time in shelter than larger sized juveniles. ► At 36 mm CL appears to be a shift from shelter use to increased foraging.