A floating boom can be designed to fence off trash. It is fabricated from a series of buoys on which a skirting is attached, customized to any enclosure length and depth, positioned by weight ballast, fluke, or Platipus anchor to the seabed. Components are chosen for durability, ease of installation and operation, and minimal maintenance, such as strong, high-buoyancy HDPE pipe float, marine-grade Kikkonet skirting, and stainless-steel connectors. A manual gateway option allows marine traffic whenever necessary.