Thalassa Spa is an ocean-inspired day spa set back from the Mooloolaba Esplanade, offering float tanks, an infrared sauna, infrared light pods and PEMF crystal mats alongside massages and facials. Infrared sauna sessions are private, at $45 for 30 minutes, $55 for 45 and $75 for 60, with a couples option, and sauna sessions can be paired with float or light therapy in packages.