The bill introduces a voluntary contribution mechanism for vessel owners in Washington to support salmon preservation efforts through the newly established sea lion predation control account. During the registration or renewal of their vessels, owners can choose to donate $1 or more to this account, which is specifically designated for managing pinniped populations in the lower Columbia River area. The donations are entirely voluntary and will not replace existing funding for state agency efforts related to salmon preservation. The bill also amends existing laws concerning the treasury income account, ensuring that all earnings from surplus balances are allocated appropriately, including to the new sea lion predation control account based on its average daily balance. Additionally, the bill clarifies that no appropriation is required for certain payments related to federal mandates and outlines the distribution process for earnings from the treasury income account. It specifies that the general fund will receive the majority of these earnings, while various accounts, including the newly created sea lion predation control account, will receive their proportionate share. The bill aims to enhance the management of state treasury operations while addressing environmental conservation and wildlife management issues, with provisions for the act to take effect on July 1, 2026, and certain sections expiring between July 1, 2028, and January 1, 2029.