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.
Mhlathuze River The Mhlathuze River (Afrikaans: "Mhlatuzerivier" ) is a river in South Africa. Located in KwaZulu-Natal, its catchment area has a surface area of 4,209 km2. It rises in the west in the Babanango hills at an altitude of 1,519 m and flows over 100 km eastwards to the sea forming an estuary. The deep-sea port of Richards Bay is situated at the mouth of the Mhlathuze River and all industrial development is focused within the Empangeni / Richards Bay complex.