Avacha Bay is a Pacific Ocean bay on the southeastern coast of the Kamchatka Peninsula. It is 24 km long and 3 km wide, with a maximum depth of 26 m.
The Avacha River flows into the bay. The port city of Petropavlovsk-Kamchatsky and the closed town of Vilyuchinsk lie on the coast of the bay. It is the main transport gateway to the Kamchatka region. The bay freezes in the winter.
It was first discovered by Vitus Bering in 1729. It was surveyed and mapped by Captain Mikhail Tebenkov of the Imperial Russian Navy in the 1830s.
Avacha Bay was the scene of a massive die-off of benthic marine organisms in September–October 2020. From Wikipedia
