Skip to global NPS navigation
Skip to the main content
Skip to the footer section

National Park Service Search

Explore This Park

Explore the National Park Service

Exiting nps.gov

Island of the Blue Dolphins

Contact Us

Primary Source: Chapter 28

Black ball of tar on the beach. — Asphaltum from natural offshore seep on beach
US Geologic Survey

Last updated: April 27, 2025

Tools

Site Index
FAQ

Experience Your America.

Download the NPS app to navigate the parks on the go.

National Park Service U.S. Department of the Interior

Accessibility
Privacy Policy
FOIA
Notices
Contact The National Park Service

NPS FAQ
No Fear Act
Disclaimer
Vulnerability Disclosure Policy
USA.gov