Hawaii Revised Statutes Division 1. Government § 46-12

The various counties shall be responsible for removing and clearing all seaweed, limu, and debris which are likely to create an unsanitary condition or to otherwise become a public nuisance from the shores and beaches situated within the respective counties; provided that to the extent any of the foregoing work is a private responsibility, the responsibility may be enforced by the county in lieu of the work being done at public expense.