A bill to amend the Marine Mammal Protection Act of 1972 to extend the authorization of appropriations for the continuation of administration and implementation.

Amends the Marine Mammal Protection Act of 1972 to extend the authorization of appropriations necessary to carry out marine mammal research grants and the administration of the Marine Mammal Commission. Authorizes the appropriation of (1) $1,000,000 for each fiscal year through September 30, 1979, for commercial fishing year development; (2) $4,000,000 to the National Oceanic and Atmospheric Administration through September 30, 1978, to carry out its responsibilities under such Act; and (3) $700,000 to the Department of the Interior through September 30, 1978, to carry out its responsibilities under such Act.