Both the mouth of the Atran and which sea flow into Kattegat?
Ätran (river) Ätran is a Swedish river. The river is about 240 km long, and has its source in Gullered, Västergötland, at a height of 332 m above sea level. The river has its mouth in Falkenberg, Halland, where the river enters Kattegat.
Vaigattøyane Vaigattøyane is a group of islands in Hinlopen Strait, between Spitsbergen and Nordaustlandet of the Svalbard archipelago. The island group is named after "Waygat", a previous name of Hinlopenstretet.