3 and 4 only. The Adriatic Sea is a body of water separating the Italian Peninsula from the Balkan peninsula. The countries with coasts on the Adriatic sea are Albania, Bosnia and Herzegovina, Croatia, Italy, Montenegro and Slovenia. Hence, statement 1 is correct.Trick to Remember - INCREDIBLY Slimy Cockroach Bit My AuntI - ItalyS - SloveniaC - CroatiaB - Bosnia and HerzegovinaM - MontenegroA - AlbaniaBlack Sea is a large inland sea situated at the southeastern extremity of Europe. It is bordered by Ukraine to the north, Russia to the northeast, Georgia to the east, Turkey to the south, and Bulgaria and Romania to the west. Black Sea is not bordered by Croatia. Hence, statement 2 is not correct.Trick to Remember - BuRGURT [ Add T to Burger ]Bu – BulgariaR – RussiaG – GeorgiaU – UkraineR – RomaniaT – TurkeyCaspian Sea is the world's largest inland body of water, variously CLASSED as the world's largest lake or a full-fledged sea.It is an endorheic basin (a basin without outflows) located between Europe and Asia.It is bounded by Kazakhstan to the northeast, Russia to the northwest, Azerbaijan to the west, Iran to the south, and Turkmenistan to the southeast. Hence, statement 3 is correct.Trick to Remember - TARIKT = TurkmenistanA = AzerbaijanR = RussiaI = IranK = KazakhstanMediterranean Sea is an intercontinental sea that stretches from the Atlantic Ocean on the west to Asia on the east and separates Europe from Africa.The countries surrounding the Mediterranean in clockwise order are Spain, France, Monaco, Italy, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Albania, Greece, Turkey, Syria, Lebanon, Israel, Egypt, Libya, Tunisia, Algeria, and Morocco. Hence, statement 4 is correct.Trick to RememberAsian Part: SILCy (Syria, Israel, Lebanon, Cyprus)African Part: TAMEL (Tunisia, Algeria, Morocco, Egypt, Libya)European Part: BOSS ki SASTI MoMo in Greece and FranC (Bosnia, Spain, Albania, Slovenia, Turkey, Italy, Montenegro, Monacco, Greece, France, Croatia)Countries bordering Syria: TIJIL (Turkey, Israel, Jordan, Iraq, Lebanon)Red Sea is a narrow strip of water EXTENDING south-eastward from Suez, Egypt, for about 1,930 KM to the Bab-el-Mandeb Strait, which connects with the Gulf of Aden and thence with the Arabian Sea.The six countries bordering the Red Sea proper are - Saudi Arabia, Yemen, Egypt, Sudan, Eritrea and Djibouti. Red Sea is not bordered by Syria. Hence, statement 5 is not correct.Trick to RememberDESSEY (Djibouti, Eritrea, Saudi Arabia, Sudan, Egypt, Yemen)