Mackerel flapper – a widely used bait for conger and tope. Produced by cutting the sides of the mackerel to remove the backbone but retaining the head.
Low water mark – The lowest point along a coastline that any given tide recedes to.
Low pressure area – In an area of low pressure the air has a tendency to rise. This general upward motion means that there is less pressure from the air pushing down on the earth, in other words there is low pressure. As air rises, it cools and if there is enough water vapour it may condense to form clouds and rain.