Davy Jones and old salt

Reader's Digestの海に関係する単語クイズの最後の問題 "Davy Jones" はUncle Samと同様に海を擬人化（the sea personified）した単語だそうです。 また、 "Davy Jones" の例文にあった "old salt" も面白い表現です。
例文：　Any old salt will tell you that Davy Jones is a fickle friend.
"old salt" を辞書でひくと：
・Macmillan Dictionary: an old sailor with a lot of experience
ついでに "Davy Jones" も辞書の説明を見ます。
・Dictionary.com: personification of the sea.
・Wiktionary:
1.The spirit of the sea.
2. The sea bed, bottom of the ocean.
Example: The pirates made him walk the plank, sent him down to Davy Jones.
・Collins English Dictionary:
1. Also called: Davy Jones's locker the ocean's bottom, esp when regarded as the grave of those lost or buried at sea
2. the spirit or devil of the sea