Numerous expeditions of Charles William Beebe, American naturalist, explorer, and author, include a record oceanic descent in a bathysphere, which he helped to design in 1934.
William Beebe worked as a marine biologist and entomologist. For the zoological society of New York, he conducted his deep dives, and people remember his prolific scientific writing for both academic and popular audiences.
He also wrote under the names Charles William and C. William Beebe.
Although it's old the book hasn't aged too badly. The passion Beebe had for the subject comes across strongly and makes it very enjoyable to read. It covers a lot of content without going too far into details, which makes it interesting and accessible to casual readers like myself. I would recommend it if you're interested in ornithology and have access to it.