Maine Department of Marine Resources technician Jason Beaudry leaps out of a boat in Gardiner recently after searching the Kennebec River with biologists Jason Bartlett, center, and Gail Whipplehauser with a side scan sonar between Gardiner and Augusta. According to Whipplehauser, the scientists are collecting data on the migration of sturgeon, shad and herring that spawn in the river through mid-July.