Weight trends can be a helpful indicator of hydration and nutritional status in veterinary medicine and wildlife rehabilitation settings. This article explores body weight and body measurements in the green (Chelonia mydas), flatback (Natator depressus), hawksbill (Eretmochelys imbricata), Kemp’s ridley (Lepidochelys kempi), leatherback (Dermochelys coriacea), loggerhead (Caretta caretta), and olive ridley (Lepidochelys olivacea) turtle. Subjective and objective body condition scoring systems used during physical examination are described and examples ranging from emaciation to obesity are illustrated. The relationship between carapace length and sea turtle sexual maturity is also discussed. LOGIN to view references.