Original interlocking protection system that floats on the surface of your pond. Deters both herons and cats which both attack from the pond edge.This larger rectangular version is perfect for large or square designs, but if you have a small round pond check out the Netfloat rings.Netfloat is less obtrusive than conventional pond netting and can be fitted to any shape fish pond. The Netfloat system works as an efficient deterrent protecting any koi carp or goldfish from heron attack! Netfloat can be cut or left out to allow pond plants such as lilies to grow through and they can easily be removed and replaced for pond maintenance.