What is a large body of fresh water called?

Where do most ships get hijacked in water? When you hook up an automatic vacuum to the skimmer on your above ground pool it will not move any idea why it is not working? How long do you wait to swim after super shock 4- way? How thick were castle walls? If 1 lap equals .333 mile how many laps equals 1 mile? Is birch bark a living organism? How many feet above sea level is delray beach Fla? What you call a person who looks after the swimming pool? What is the name of A canal that allows passage from the pacific ocean to the Caribbean sea.? Is a pool apron part of a pool? What if your pool heater broke now you only want to heat your spa What size heater would heat a 6 person jacuzzi? My Haywood EC 40 Pool Filter is not circulating water and has no pressure. The pump has water as indicated in the pump pot through the clear top and air relief valve was bled. What now? What do you wear to swim? Should a wakeboard have a rudder? What body of water connects Central America and the Caribbean? How do you retrieve something dropped in the bathtub? Why do people go surfing? Cloudy and greenish looking water in vinyl swimming pool? What is composition of clean air? Why did my pool water turn brown when I turned on my salt water chlorine generator?