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Saint Croix National Scenic RiverwayRear view of two canoeists wading and pulling their canoe over a shallow spot
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Saint Croix National Scenic Riverway
Mollusks
A yellowish-brown mussel, buried part way in the river bottom, has a white fleshy part sticking out from the shell
NPS, Multi-agency zebra mussel dive team
A mussel extrudes a lure for fish to attract them them to her.

Native Freshwater Mussels

The St. Croix has is known for having a mostly intact mussel population. Meaning, the species that lived here 100 years ago are still the species living here today. This includes 40 species of mussels, two of which are on the endangered species list. To see a list of the mussel species in the St. Croix, print a mussel fact sheet, or to learn more... about mussels
Three waterboatmens on a rock, they are dark brown and the leags are visible  

Did You Know?
Water boatmen have no gills but rather trap air with the hairs on their legs and the air bubble encircles their bodies, making them appear shiny. Their front legs are short, their middle legs are long and slender and their back legs are shaped like paddles fringed with hair.

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Last Updated: May 11, 2008 at 03:00 EST