Barracuda Lake was named such due to the discovery of a large barracuda fish skeleton in the depths of its waters. It is one of the famous (free)diving sites not only in Coron but also the entire country.
Barracuda Lake is composed of both salt and fresh water, but the most notable feature of this lake, especially for divers, is its layers of cold, warm, and hot water, also known as thermocline.
The first 4m layer of water is actually fresh water around 28°C.When you are going down you then meet salt water.There is a huge Thermocline and halocline at 14m deep and the water temperature is rising to 38°C. Around 35m deep the water is changing from clear to dark brown with lots of silt.