Bilim adamları okyanusun derinliklerini keşfetmek için bir batisfer kullandılar. - The scientists used a bathysphere to explore the depths of the ocean.
Definition of bathysphere in English English dictionary
A spherical steel deep-diving chamber with perspex windows, in which persons are lowered to the depths by a cable to study the oceans and deep-sea life; the precursor to the bathyscaphe