marine (adj.)youdaoicibaDictYouDict[marine 词源字典]
early 15c., "pertaining to the sea," from Middle French marin, from Old French marin "of the sea, maritime," from Latin marinus "of the sea," from mare "sea, the sea, seawater," from PIE *mori- "body of water, lake" (see mere (n.)). The Old English word was sælic.[marine etymology, marine origin, 英语词源]
silt (n.)youdaoicibaDictYouDict
mid-15c., originally "sediment deposited by seawater," probably from a Scandinavian source (compare Norwegian and Danish sylt "salt marsh"), or from Middle Low German or Middle Dutch silte, sulte "salt marsh, brine," from Proto-Germanic *sultjo- (cognates: Old English sealt, Old High German sulza "saltwater," German Sulze "brine"), from PIE *sal- (see salt (n.)).
tampion (n.)youdaoicibaDictYouDict
early 15c., "plug, bung," from Middle French tampon (15c.), nasalized variant of Old French tapon "piece of cloth to stop a hole" (14c.), a suffixed form of Frankish *tappo "stopper, plug," related to Old High German zapfo and Old English tæppa "stopper" (see tap (n.1)). Meaning "wooden plug for the muzzle of a gun" (to keep out rain or seawater) is recorded from 1620s.
oceanariumyoudaoicibaDictYouDict
"A large seawater aquarium in which marine animals are kept for study and public entertainment", 1940s: from ocean, on the pattern of aquarium.