On 20 April 2017 the California State Lands Commission (CSLC) approved the "Biofouling Management Regulations to Minimize the Transport of Nonindigenous Species from Vessels Arriving at California Ports". These regulations, applicable to vessels >300 GT which call at California ports and are capable of carrying ballast water, will enter into force in two stages on 1 October 2017 and 1 January 2018.