oceans,https://youtube.com/shorts/106t3dAHzpY?feature=share
seas,#
Pacific ocean,#
Atlantic ocean,
haloclines,
#borders between seas,#
borders between oceans,
North sea,#
Baltic sea,
Mediterranean Sea,
#Caribbean Sea,
Rio Negro,#
#Amazon River,
Rhein,
rivers of India,#
rivers of China,
rivers of Russia,
Colorado river,
Uruguay River,
geography