No. The Sea of Marmara has an area of 11,350 km²; the Read Sea an area of 450,000 km².
No
baltic sea
by name red sea is smallest, though not a proper sea
red sea
Plankton
No. there are numerous lakes and ponds all over the world smaller than The Red Sea.
The Baltic Sea is not the smallest, both the Persian Gulf and the Yellow Sea are smaller
meditteranium sea
The sea of marmara is considered the smallest sea which separates turkey's Asian and European parts.
the red sea
black sea
The Mediterranean Sea