Seismic data extracted in the region has revealed that valleys on the submarine slope cut several dozen metres into Miocene-Pliocene conglomerates.
The river forming the upper valley is a gorge section of more than 300 metres (980 ft) height, with steep rock slopes on both banks.
Another plant recently identified near the Ritz Lake is given the name Campanula paradoxa and "forms a rosette of large leaves with lateral shoots producing inflorescence of white flowers."
This lake was once an internal harbour connected to the Black Sea when the ancient city of Pityus was founded; archaeological finds at this place have revealed antiquarian artifacts and foundations of structures.
Significant populations of Darevskia alpina, a species listed as vulnerable by the IUCN, have been recorded in the upper reaches of the Bzyb.
Some of the rare collections which have thrived well under the prevailing climatic conditions include the coniferous coastal redwood Sequoia sempervirens and the deodar Cedrus deodara.
[3] The river supports a significant population of Black Sea salmon (also known as kumzha from the name in Georgian: კუმჟა, romanized: k'umzha).
[19] Soviet General Secretary Nikita Khrushchev once proposed a major dam and hydroelectric power generation facility on the Bzyb, since his favourite resort was located near the mouth of the river at Pitsunda.
However, this proposal was ruled out by his experts who opined that a dam built on the Bzyb would have had catastrophic effects in causing beach erosion at Pitsunda.
[22] Pitsunda Cape at the mouth of the Bzyb has many important landmarks such as the ancient settlement of Pitiunt, a lighthouse, a temple of the 10th century, a museum and an old pine tree maintained from 1926.