thumb|A wooden livewell (container for live bait), towed by fishing boat. Exposition in Fisheries Museum in Hel (branch of National Maritime Museum in Gdańsk) A livewell is a water tank found on many fishing boats that is used to keep live bait and caught fish alive. It works by pumping natural water from the surrounding waterbody into the tank, as well as an air pump for water aeration. It is a standard design feature in many modern sport fishing boats and yachts, especially those used in fishing tournaments, as competitions typically weigh participants' catch only at the end of the round and
thumb|A wooden livewell (container for live bait), towed by fishing boat. Exposition in Fisheries Museum in Hel (branch of National Maritime Museum in Gdańsk) A livewell is a water tank found on many fishing boats that is used to keep live bait and caught fish alive. It works by pumping natural water from the surrounding waterbody into the tank, as well as an air pump for water aeration. It is a standard design feature in many modern sport fishing boats and yachts, especially those used in fishing tournaments, as competitions typically weigh participants' catch only at the end of the round and thus require the caught fish to be kept in the condition they were caught until the boat returns to dock.
A rule of thumb for determining the necessitated size of a livewell is that every inch length of fish needs a gallon (3.8 liter) of water if it is desired to keep the fish alive for a prolonged period of time. Besides size and water circulation, two other key factors of the functionality of a livewell are maintaining proper temperature and removing metabolic waste. Water temperatures should be below ; ice can be used as a coolant.
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