oceanarium

noun, plural o·cea·nar·i·ums, o·cea·nar·i·a [oh-shuh–nair-ee-uh] /ˌoʊ ʃəˈnɛər i ə/.

1. a large saltwater aquarium for the display and observation of fish and other marine life.

noun plural -iums or -ia (-ɪə)

1. a large saltwater aquarium for marine life