It seems likely that the larvae of Petrolisthes armatus have been carried to new locations in ballast water, or it may have been introduced during the seeding of oyster or other shellfish beds during aquaculture procedures
काही किल्ल्यांना समुद्राच्या ओहोटीच्या वेळी उथळ पाण्यातून किंवा किंवा पाण्यातून वर आलेल्या पायरस्त्यावरून पायी पायी जाता येते.