Julia Creek as it exits Virgin Lake in Three Lakes, WI
An interesting P. grandis. Extreme looking injury has truncated the growth of the posterior end pretty severely.
Searched for ≈45 min in 2-4 foot deep water over primarily sand substrate with some gravel and cobble. This species found alive commonly. All animals with with attached Dreissena polymorpha.
Casual observation made while kayaking on Lake Killarney, Oneida County, WI