The objective of this thesis is to introduce Floating Wave Filters (FWF), which are floating structures anchored to the sea bottom that aim to block short-period waves and transmit long-period waves in order to improve surfing conditions. Short-period waves are generated by local winds, their periods do not exceed 4 seconds and wave heights are less than half a meter. Long-period waves refer to swell waves, with periods longer than 8-10 seconds and variable heights.