Croatian sea is Adriatic and this sea is the most beautiful sea on the world with more than one thousand islands and bays.
Croatia have some large rivers;
In Pannonian region; Sava, Drava and Danube
Middle region; Kupa, Korana and Una
Istra region; Mirna
Lika region have Lika river and Gacka
Dalmatia region; Zrmanja, Krka, Cetina and Neretva.
Biggest mountains in Croatia are Velebit, Dinara, Biokovo, Papuk, Učka and Sljeme