Sea Otter Publications and Facts

Over the years, Defenders of Wildlife has produced a variety of publications on sea otters:

Fact sheet
FAQs
Posters

In addition, Defenders of Wildlife has specific educational materials, reports and a catalog of newspaper clippings and press releases specific to the various sea otter populations.

Human Related Sea Otter Mortality

Various laws exist that are designed to protect sea otters. Unfortunately, some sea otters are still killed each year by humans. Learn more about sea otter mortality and find out how you can help.

Range Maps

World Wide Distribution

California Distribution

California Management Zone


These maps are found in “The Sea Otter (Enydra lutrix): Behavior, Ecology, and Natural History” by Marianne L. Riedman and James A. Estes (Biological Report 90(14); U.S. department of Interior; 1990) and have been modified and used with the permission of Dr. James A. Estes

California Sea Otter Facts and Publications

Sea Otter Economics Report (2005) - Eventual expansion of southern sea otter populations and range would provide more than $100 million in annual economic benefits to California households. These benefits derive from recreation, tourism, ecosystem services, option value and existence value.
Read More and Download the Report

Defenders Winter 2005 Magazine Article - California’s Sea Otters: Sink or Swim? By Michael Tennesen

Alaska Sea Otter Facts and Publications

Alaska Sea Otter Brochure, Poster, Video

Washington Sea Otter Facts and Publications

Defenders 1998 Magazine Article - Washington’s Otter Comeback by Tim McNulty

Sea Otters' Revival in State Waters Brings New Concerns