Atlantic
Vermont
Laos is the only landlocked country in Asia. It has no seacoast, being inland from Vietnam.
Belize
I thought the smallest was Belize, but the one that's not on the Caribbean coast is El Salvador.
Only Trinidad and Tobago have oil producing capabilities in the Caribbean
San Salvador is the capital of El Salvador, the only country in Central America that does not border the Caribbean Sea.
Cuba
El Salvador is the only country in Central America that has only a Pacific Coast. To its east, Belize similarly has only a Caribbean coast.
El Salvador
Honduras does touch the Caribbean Sea, which can be said to be part of the Atlantic. Most other countries in Central America also do so. Only El Salvador does not touch the Atlantic Ocean/Caribbean Sea.
The only country in Central America that does not border the Caribbean Sea is El Salvador. All other Central American countries do border it.
The small country on the Caribbean coast that is bordered by Mexico and Guatemala is Belize. Belize is the only English speaking country in Central America.