Prohibits the department of natural resources from entering into a new lease, renewing or extending an existing lease, or other use authorization where the use includes marine finfish aquaculture of Atlantic salmon or other nonnative finfish.

Requires the department of fish and wildlife and the department of ecology to only authorize or permit marine finfish aquaculture of Atlantic salmon or other nonnative finfish where it is an authorized use under a lease of state-owned aquatic lands.

Prohibits the department of fish and wildlife and the department of ecology, for marine finfish aquaculture of Atlantic salmon or other nonnative finfish, from authorizing or permitting any of the activities or operations after the expiration date of the relevant lease of state-owned aquatic lands.

Requires the department of ecology, the department of natural resources, and the department of fish and wildlife to: (1) Continue the existing effort to update guidance and informational resources to industry and governments for planning and permitting commercial marine net pen aquaculture; and

(2) In collaboration with other relevant agencies and participating tribes, conduct a study designed to understand the ecological impacts to Puget Sound native salmon stocks, and impacts to water quality and sediments, that resulted from the 2017 Atlantic salmon escapement.