Name the water body
Inside the question engineOpen the field notes
We draw a sea or lake and show only its outline in an equal-area projection. All three distractors belong to the same category as the correct answer, so seas are compared with seas and lakes with lakes.
About the quiz: Name the water body
This quiz tests whether you can identify a sea or lake from its outline alone, with no labels or background map. The wrong answers belong to the same category, so you compare seas with seas and lakes with lakes.
How are the questions built?
Each round has 10 questions. The pool contains 7 seas and 18 lakes, and outlines do not repeat within a round while the pool allows it. The outlines are drawn in an equal-area projection.
Where does the data come from?
Outlines come from Natural Earth data, and descriptions and areas from the source assigned to each water body: Encyclopaedia Britannica and the US Environmental Protection Agency (published 2023 and 2024).
A fact from the data
The largest outline in the pool belongs to the Caribbean Sea (2,754,000 km²), and the smallest to Vänern (5,655 km²).