A bill to extend and amend the National Sea Grant College and Program Act of 1966, as amended.

Amends the National Sea Grant College and Program Act of 1966 to authorize appropriations for such Act through September 30, 1979. Authorizes the expenditure of $40,000,000 for fiscal year 1977, $45,000,000 for fiscal year 1978, and $50,000,000 for fiscal year 1979.

Provides that provisions of the Act prohibiting the use of funds for the purchase or rental of any land or the rental, purchase, construction, or repair of buildings, docks, or vessels shall not apply to the payment for the services of research vessels and other ocean facilities directly supporting specific sea grant sponsored activities.

Redefines "marine environment" to include the seabed and subsoil of submarine areas beyond the Continental Shelf and the natural resources thereof.

Authorizes the Secretary of Commerce to encourage the advancement of other nations relating to the exploration, conservation, and management of marine resources. Gives the Secretary authority to support the funding of education and training of foreign nationals through sea-grant institutions. Authorizes the appropriation of $3,000,000 for each of the fiscal years 1977 through 1979 to carry out such functions.

Authorizes the Secretary to enter into contracts with, or grants to, eligible institutions to assist the Secretary in carrying out programs relating to the development, management, and protection of the marine environment.