Abstract: A system to provide at least one thermal refugium in a body of water. The system includes at least one enclosure configured to partially isolate at least one local volume of water, at least one heat exchanger within the enclosure, a thermal apparatus operably coupled to the heat exchanger, and a controller operably coupled to the thermal apparatus. The heat exchanger transfers heat into or out of the local volume of water. The thermal apparatus transfers the heat in and out of a fluid being circulated between the thermal apparatus and the heat exchanger. The controller is configured to control the transfer of the heat into or out of the local volume of water to maintain a local temperature in the local volume of water sustainable for wildlife living in the body of water.