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Utah Department of Natural Resources.
Quagga mussels are a "SKIFF-TRANSMITTED DISEASE" (STD), and they're a threat to Utah lakes. They’re so small, they could be hitching a ride on your boat without you even knowing it. They’re dangerous and they’re damaging. That’s why it’s so important to prevent spreading them to other Utah lakes.

Invasive Species Centre (Ontario).
Owning a pet or an aquarium can be an exciting and fulfilling hobby – but it also comes with responsibility! Domestic pets like fishes, invertebrates, aquatic plants, reptiles, amphibians, or mammals can become invasive when released into natural environments. The best practice in preventing the spread of invasive species is to not let it loose!

Dec 6, 2021
Michigan.gov. Michigan Invasive Species Program.
The Michigan departments of Environment, Great Lakes, and Energy and Natural Resources confirmed a report of didymo, a nuisance freshwater alga, in a stretch of the Upper Manistee River in Kalkaska County. Also known as rock snot despite its coarse, woolly texture, didymo can grow into thick mats that cover the river bottom. The Manistee River finding marks the first detection of didymo blooms in the Lower Peninsula. In 2015, extensive mats of didymo were found on the Michigan side of the St. Marys River near Sault Ste. Marie in the Upper Peninsula.

If you observe didymo in the water, either as small, cotton ball-sized patches or thick blankets with rope-like strings that flow in currents, take photos, note the location and report it by using the Midwest Invasive Species Information Network, available online at MISIN.MSU.edu or as a downloadable smartphone app. The MISIN smartphone app will take a GPS location point if a report is made at the site; it also will allow you to upload photos with a report. Find more information on didymo and how to identify it at Michigan.gov/Invasives.

Wageningen University & Research (Netherlands); Dutch Caribbean Nature Alliance.

Nov 2024
Connecticut Agricultural Experiment Station.
See also: Ground Covers, Trees, Shrubs, and Woody Ornamentals Fact Sheets for more resources

University of Georgia. Center for Invasive Species and Ecosystem Health.
Early Detection and Distribution Mapping System (EDDMapS) is a platform for invasive and pest species information and occurrence data including all taxa and environments, and provides a more accurate picture of the distribution of invasive species. EDDMapS will allow land managers, agencies, and others to set priorities for early detection and rapid response (EDRR), as well as formulate overall invasive plant management action plans. EDDMapS provides online tools for citizens to report invasive species sightings and maps these sightings to provide distribution information by species, state, and county. There are many tools available to help small, locally-based groups to map and manage their invasive and pest species populations.