Historic District

1.5 km Marker

Sea Lamprey

Lamprey · Lamproie · Mzay

A sea lamprey. Photo: User:Drow_male / Wikimedia Commons / CC-BY-SA-3.0

Sea lamprey is an aquatic invasive species that can be found in the St. Marys River. These eel-like fish are parasites that attack other fish by latching onto them with their sharp teeth. Originally native to the Atlantic coast, the lampreys made their way into the Great Lakes through shipping canals. The federal Sea Lamprey Control program, based in the Sault, has greatly reduced their numbers. The Sea Lamprey Control program is part of an international effort to control lamprey populations throughout North America.

Invasive Species Research Institute Video

Watch this video with Dr. Pedro Antunes, Algoma University Associate Professor in the Department of Biology, to learn about invasive species, photograph them with your phone and report your observations.

Challenge Yourself!

  • Test your knowledge

  • True or False

    Sea lampreys are blind.

  • Did you know?

    Lamprey larvae are blind, but adult sea lampreys have large eyes.

  • True or False 2

    In its native habitat, the sea lamprey lives in both fresh water and salt water.

  • True or False 3

    The sea lampreys devastated local fisheries in the 1940s and 1950s.

  • You did great!