[1] It covers an area slightly bigger than the Caspian Sea on Earth, making it the largest known lake in the Solar System.

[4] One of its northernmost bays (Moray Sinus) has a depth of 85 metres (279 ft) at its center and shows an attenuation of the signal in the liquid that is compatible with a composition of 70% methane, 16% nitrogen and 14% ethane (assuming ideal mixing).

[7] The narrow constriction in the sea at 317°W, 67°N, about 17 kilometres (11 mi) wide and similar in size to the Strait of Gibraltar, officially named Seldon Fretum,[8] has been termed the 'Throat of Kraken' and suggested to be a location of significant currents.

This was accomplished by noticing that certain dark regions, especially near the poles, had low radar reflectivity, as well as similar morphological features to that of terrestrial lakes.

[13][2][14] In addition to the radar images, the Cassini instrument VIMS (Visible and Infrared Mapping Spectrometer) has surveyed Kraken Mare and its surroundings.