National Marine Sanctuary

Whale Tail Whales abound in Sanctuary waters

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The Monterey Bay National Marine Sanctuary was established in September 1992. The Sanctuary encompasses a shoreline length of 276 miles and 6,094 square miles of ocean from Marin to Cambria. It supports one of the world's most diverse ecosystems, home to numerous mammal, fish, bird, invertebrate and plant species.

Marine sanctuaries strive to preserve ocean environments that are still relatively pristine while promoting multiple use of the area for enjoyment by everyone. Ninety percent of the U.S. population lives within 200 miles of the nation's coastlines and competition for use of ocean resources is growing rapidly.

Monterey Bay Marine Life

Federally Regulated Activities

Staff Directory and Contact Form

VHF RADIO: Harbor staff monitors, on a 24 hour basis, Channel 05a is our working VHF channel. Channel 16 - hailing channel for emergencies and Monterey United States Coast Guard.

LATITUDE-LONGITUDE: Monterey Harbor Light 6 located at the end of the Monterey breakwater is 36°36.5' North by 121°53.4' West per the 2018 U.S. Coast Guard Light list.

PHONE: (831) 646-3950 Day / 594-7760 Evening "After hours" / 646-5674 Fax

Office Open everyday 8 a.m. to 5 p.m.
(5 p.m. to 8 a.m.) For check out or check in, information, transient berthing requests, etc.

Office of the Harbormaster
250 Figueroa St.
Monterey, CA 93940

Activities on the Bay

The Sanctuary has many diverse uses, including the following:

  • Board sports, SCUBA diving, free diving and snorkeling
  • Boating, sailing and harbors
  • Coastal development
  • Commercial and recreational fishing
  • Kelp harvesting
  • Military activities
  • Tourism and recreation
  • Scientific research
  • Shipping
Did you know
The Monterey Bay submarine canyon is larger than the Grand Canyon! The deepest point in the Sanctuary is 10,663 feet (3,250 meters). It is also the largest marine sanctuary in the United States, the largest marine sanctuary in the world by volume, and the second largest in the world by area. The average surface area is a cold 55 F (13 C)
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