Both the mouth of the Atran and which sea flow into Kattegat?
Kattegat The Kattegat (] ; Swedish: "Kattegatt" , ] ) is a 30000 km2 sea area bounded by the Jutlandic peninsula in the west, the Danish straits islands of Denmark to the south and the provinces of Västergötland, Scania, Halland and Bohuslän in Sweden in the east. The Baltic Sea drains into the Kattegat through the Danish Straits. The sea area is a continuation of the Skagerrak and may be seen as a bay of the Baltic Sea or the North Sea or, as in traditional Scandinavian usage, neither of these.
Tanafjord The Tanafjord or Tanafjorden () is a large fjord in Finnmark county, Norway. It is located in the municipalities of Tana, Gamvik, and Berlevåg. Its orientation is mainly north-south, reaching approximately 65 km from the small village of Smalfjord in Tana Municipality in the south to the mouth of the fjord at the Barents Sea. The fjord separates the Nordkinn Peninsula (Gamvik Municipality) in the west from the Varanger Peninsula (Berlevåg Municipality) in the east.