[2] In 2014, its northern limit was extended to Hampton, New Hampshire, as a result of a range expansion possibly due to climate change.

[2] The most conspicuous difference is the form of the chelipeds (claw-bearing legs); in females, they are similar, while in males, one is greatly enlarged and colored yellow.

Mating occurs up to every two weeks, typically 4–5 days after the spring tides, over a period lasting from June to September.

[2] It takes place in a burrow, after which the female will brood her eggs for 12–15 days before releasing the hatchling larvae on the high spring tides.

[2] The larvae pass through five planktonic zoea and one megalopa stages before settling to the sea floor to molt into the adult form.