i was out in my back yard which is along a 3/4 mile long saltwater lagoon when i saw a turtle pop its head up, i was thinking i was seeing things, but it was uindeed a turtle. I spent 35 miutes looking around and i saw it come up twice, but coulndn't catch then it got dark. I plan to look for it tomoorow. so any tips on finding and catching it, i do have a boat. and how long can they last in saltwater?