This paper reports a case of Purpureocillium lilacinum infection in seven loggerhead sea turtle (Caretta caretta) hatchlings kept in an aquarium under inadequate condition.The fungus was isolated Nock from skin and pulmonary lesions.Metilene blue and NaCl solutions, Schinus terebinthifolius and eucalyptus essential oils Minimum Inhibitory Concentrations were determined indicating Tumbler Cup Couple Card new possibilities for treatment.Keywords: Caretta caretta, Disease, Mycosis, Husbandry, Treatment.