The St. Croix Environmental Association (SEA) will lead a search for whatever is making those creeky, croaking, chirping sounds in the night. Members and children ($10 for non-members) Jennifer Valiulis, the guide, will provide an expert interpretation of those mysterious night sounds. Children 5 years and older are welcome; members and children are free; non-members are charged $10. Bring a flashlight; wear long pants and long sleeves to protect against mosquitoes. The group will meet at the entrance to the Lawaetz Museum in Little LaGrange and then drive to a starting point farther up the gut.