Seadle

Seadle is a Worldle-style game for the oceans, made by muhashi. Instead of countries, its answers are the named waters of the world map: seas like the Banda or the Laptev, gulfs from Aden to Thailand, straits such as Malacca and Bass, bays, channels and the oceans themselves, about a hundred in all.

You pick a name from the search list and press Guess. The sea is shaded on a rotating globe and added to your list with its distance from the answer, in kilometres or miles, or the word Borders if the two touch. You keep guessing until you find it, and the result shows how many guesses you took, with a numbered result to share.

The settings let you show a compass and display every sea's name when you hover over the globe, which turns it into a study aid. The game plays in the browser and needs no account. It suits players who know their countries and want to learn the water between them.