Least Wanted Aquatic Invaders

How You Can Help Detect New Invasions
  • Familiarize yourself with the "least wanted invaders" described in this booklet. Review this booklet regularly.
  • Bring this booklet with you and keep your eyes open for these species when you are in aquatic habitats in the Monterey Bay region.
  • If you find something closely resembling one of the least wanted invaders, carefully collect a single voucher specimen (or at least take a photo or careful descriptive notes), and write down your exact location.
  • Immediately contact the Elkhorn Slough National Estuarine Research Reserve at (831) 728-2822 to report sightings of any of these species; explicitly state that you are making an "urgent invasive report".
  • Bring your voucher specimen to the Reserve (or arrange for it to be picked up at your convenience) for confirmation of the identification.
  • By participating in this early detection program, you will help to protect our rich coastal ecosystems from aquatic invasions by non-native species.
  • The Monterey Bay is the focus of this program, but we welcome reports from as far south as Morro Bay and as far north as Moss Beach.
  • How You Can Prevent the Spread of Invasive Species
  • Make sure to dispose of unused fishing bait properly (in garbage cans, not aquatic habitats).
  • Never dump aquarium contents into natural waterways or drainages that feed into them.
  • When possible, clean boats and trailers before moving them between different areas (in particular, before bringing a badly fouled boat from a highly invaded area such as San Francisco Bay to a relatively pristine area such as Monterey Bay).
  • Never bring any plants or animals home from travels abroad.
  • Clean hiking boots and camping gear, and muddy car tires before and after excursions.
  • When hiking be careful not to disturb natural terrestrial areas, and when diving take care not to disturb natural aquatic areas.
  • Use native or at least non-invasive ornamental plants in landscaping and encourage nurseries to stop stocking highly invasive non-native plants.
  • Do not attempt eradication of aquatic invaders yourself (fragmentation of algal species during removal attempts may increase spread).
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