Recent technological advances in manned and unmanned undersea vehicles have overcome some of the limitations of divers and diving equipment.
Without a vehicle, divers often become sluggish and their mental concentration becomes limited.
Because of undersea pressure which affected their speech organs, communication among divers was difficult or impossible.
But today, most oceanographers make observations by means of instruments which are lowered into the ocean or from samples taken from the water.
Direct observations of the ocean floor are made not only by divers but also by deep‐diving submarines.
Some of these submarines can dive to depths of more than seven miles and cruise at depths of thousand feet.
Radio‐equipped buoys can be operated by remote control in order to transmit information back to land‐based laboratories.
Baca Juga: Pembahasan Soal Mencari Tujuan Utama Penulis UTBK Bahasa Inggris
Terjemahan
Kemajuan teknologi terbaru dalam kendaraan bawah laut berawak dan tak berawak telah mengatasi beberapa keterbatasan penyelam dan peralatan menyelam.
Tanpa kendaraan, penyelam sering menjadi lamban dan konsentrasi mental mereka menjadi terbatas.
Karena tekanan bawah laut yang mempengaruhi organ bicara mereka, komunikasi antar penyelam menjadi sulit atau tidak mungkin.