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      • Saving the Scalloped Hammerheads of Baja
      • California Marine Protection
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        • Hawai’i Kahu Manō- Guardians of the Shark
        • Respect for Hawaii Fish- Aquarium Collection
        • ‘Auamakua, Hawaii’s Spiritual Connection to the Shark
      • Sharks in the Coral Triangle
    • Our Team
      • Media Kit, David McGuire, Shark Stewards
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      • Act Now to Defend the Endangered Species Act
      • WE DID IT! Saving Endangered Sharks at CITES 2022
      • US Shark Fin Sales Elimination Act Signed into Law
      • Law to End Lethal California Driftnet Fishery Passes
      • Support the Papahānaumokuākea National Marine Sanctuary Designation
    • Shark Stewards DEI Statement
    • Statement Against Asian and API Hate
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      • Shark Sanctuary and MPAs
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      • Sharktober Sanctuary Tours- Instructions
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      • How to Avoid a White Shark Attack
      • Sharktober- White Shark Awareness
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        • Sharks of the San Francisco Bay
        • Shark ID and MPAs Education Adventure
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    • Protect the Papahānaumokuākea and Pacific Marine National Monuments From Commercial Fishing
    • SHARKED Act in Senate Committee- Act Now
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    • Urgent Action to Save Oceanic Whitetip Sharks
    • Stop Big Plastic From Polluting Oceans
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Shark Stewards Launches New Plastics Branding Report

Group of Cal Berkeley Youth in fornt of rowing club

The non-profit Shark Stewards has released a report on annual plastic branding and monitoring. In 11 cleanups at Berkeley Aquatic Park, volunteers and team members collected over 1.5 tons of waste comprised of 17,728 items.

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Posted byDavid McGuireDecember 31, 2025March 20, 2026Tags: aquatic park, Berkeley, cleanup, plastics, recycling

Celebrating and Protecting Manta Rays

Queenie1626

September 17 is World Manta Day, a day to celebrate the marvelous mobula rays and how to protect these increasingly endangered rays. Manta Facts Manta rays are relatives of all […]

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Posted byDavid McGuireSeptember 17, 2022September 17, 2022Tags: China, giant manta ray, gill raker, indonesia, kona hawaii, mobula ray, plastics, reef manta, sharks, tourism, world manta ray

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Products

  • Papahānaumokuākea Marine National Monument. Protect the Papahānaumokuākea Campaign T-Shirt $29.99
  • science book Sharks for Kids: A Junior Scientist's Guide to Great Whites, Hammerheads, and Other Sharks $14.95
  • Swag Mens Hammerhead and Manta Ray T shirt $29.99
  • Swag Hammerhead and Manta T Women's $29.99

Act Now

  • Shark Stewards Adds Unfair Competition Claim in Plastic Pollution Lawsuit

    Environmental Group in California Adds Unfair Competition Claim in Plastic Pollution Lawsuit Earth Island Institute Files Amended Complaint Against Coca-Cola, Pepsi, and other defendants to hold them accountable for plastic …

  • Stop Radiation Dumping in the Pacific

    Japan proposes to release 1.3 million tons of radioactive wastewater from the Fukushima nuclear meltdown into the Pacific ocean sometime in the Spring or Summer of 2023.

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  • About
    • Mission and Vision
    • Our Goals and How We Get There
    • Where We Work
      • Saving the Scalloped Hammerheads of Baja
      • California Marine Protection
      • Sharks of Hawaii
        • Hawai’i Kahu Manō- Guardians of the Shark
        • Respect for Hawaii Fish- Aquarium Collection
        • ‘Auamakua, Hawaii’s Spiritual Connection to the Shark
      • Sharks in the Coral Triangle
    • Our Team
      • Media Kit, David McGuire, Shark Stewards
    • Partners & Donors
    • Victories & Milestones
      • Act Now to Defend the Endangered Species Act
      • WE DID IT! Saving Endangered Sharks at CITES 2022
      • US Shark Fin Sales Elimination Act Signed into Law
      • Law to End Lethal California Driftnet Fishery Passes
      • Support the Papahānaumokuākea National Marine Sanctuary Designation
    • Shark Stewards DEI Statement
    • Statement Against Asian and API Hate
  • Our Work
    • Saving Sharks
    • California Marine Protected Area Network
      • Shark Sanctuary and MPAs
    • Sharktober Sanctuary Wildlife Expeditions
      • Sharktober: Farallon Sanctuary and Wildlife Tours
      • Sharktober Sanctuary Tours- Instructions
    • Aquatic Park Stewardship
    • White Shark Stewardship
      • How to Avoid a White Shark Attack
      • Sharktober- White Shark Awareness
    • Shark Watch California
      • Observe and Record Sevengill Sharks
        • Sharks of the San Francisco Bay
        • Shark ID and MPAs Education Adventure
    • Stop the Ocean Steal
    • Community Science
      • Citizen Science
    • Shark Science Sheets
      • CITES Shark Science Sheets
    • Media Production
    • Inland Ocean Academy
  • Campaigns
    • Protect the Papahānaumokuākea and Pacific Marine National Monuments From Commercial Fishing
    • SHARKED Act in Senate Committee- Act Now
    • Save the Endangered Species Act
    • Urgent Action to Save Oceanic Whitetip Sharks
    • Stop Big Plastic From Polluting Oceans
  • Get Involved
    • Contact Us
    • Shark Buddies- Connect and Protect
    • Adventures
    • Help Us Save Sharks
    • Beach Cleanups and Surveys
    • Events
  • Shark News
  • Shop

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2150 Allston Way, Suite 460
Berkeley, CA 94704

Shark Stewards is a project of The Earth Island Institute, an environmentalist think tank founded by David Brower in 1983 and a 501(c)(3) non-profit.

Our media partner is Scubazoo, who we thank for their generous support and donation of images.