A

• [+] Countries bordering the Arctic Ocean (7 C, 6 P)
• [+] Countries bordering the Atlantic Ocean (49 C, 50 P)

B

• [+] Countries bordering the Baltic Sea (9 C, 9 P)
• [+] Black Sea countries (6 C, 6 P)

C

• [+] Caribbean countries (37 C, 38 P)

I

• [+] Countries of the Indian Ocean (23 C, 20 P)

M

• [+] Countries of the Mediterranean Sea (23 C, 26 P)

P

• [+] Countries bordering the Pacific Ocean (20 C, 17 P)

P cont.

• [+] Countries bordering the Philippine Sea (5 C, 4 P)

S

• [+] Countries bordering the South China Sea (10 C, 9 P)