The larger the oceanic fish, the more mercury in its body.
I wonder if it's a coincidence that we call both Mercury, the planet, and mercury, the substance, "mercury" in English.
It’s so funny that people used to insert mercury thermometers into their butts.
This is a fun one. Water silver is mercury, which makes a lot of sense. Mercury is liquidy like water, but it is all silver like silver. So silver water isn't some new mineral water you can get for $4 at the store, it's mercury! Or quicksilver, if you prefer.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.