An ocean of depth
In English, anything related to the ocean or sea is “marine”. A boat that moves underwater, for example, is a submarine (literally, “below the ocean”). Whales and squids and sharks, etc., are marine animals ("ocean animals"). A person who studies these animals is a marine biologist ("a studier of ocean life"). Aquamarine is the color of "ocean water". There’s a branch of the United States military called the US Marine Corps. They travel by sea.
Additionally, things related to sailing are “nautical” (“NAW-tih-kull”). Tools and machines that help sailors go the correct direction, or measure their speed, are nautical instruments. Sailors use nautical charts (maps). Words and phrases related to boats or ships are nautical terms.
Which brings me to the point of this post:
In current English, to be made physically sick by something (meaning, you may throw up) – bad food, a virus or bacteria, even an idea – is to be “nauseated”.
“Nauseate" comes from the Latin word “nauseare” – meaning, “to be seasick”. And, further back, from the Greek word "naus" – meaning, "ship".
I cannot believe I never noticed the “nautical” connection! It's right there in the spelling: nauseate.
Words are so cool.