To amend Public Law 100-478 to ensure the development of effective sea turtle conservation regulations by delaying the effectiveness of certain regulations until after the completion of a study pertaining to such conservation.

Amends the Endangered Species Act Amendments of 1988 to require the Secretary of Commerce to delay the effective date of certain regulations concerning sea turtle conservation to the date two years after the Secretary's submission of an independent review. (Current law delays such regulations until May 1, 1990, for inshore areas and May 1, 1989, for offshore areas.) Provides that such regulations shall not go into effect for inshore areas if determined that other conservation measures are equally effective in reducing sea turtle mortality by shrimp trawling. Requires the Secretary to modify such regulations accordingly.