What is the blood temperature of cartilage fish?

Cartilage fish, such as sharks and rays, are typically classified as ectothermic, meaning their body temperature is largely influenced by the surrounding water temperature. Their blood temperature generally matches that of the water, which can range from about 10°C to 30°C (50°F to 86°F) depending on their habitat. Some species can maintain a slightly higher internal temperature through metabolic processes, but they do not have a constant blood temperature like endothermic animals.