Cryptic Quiz

[allcott]

Answer is a creature, plant or object associated with salt or fresh water - clue is a cockney kettle (5 letters) Thank you

[dannyk13]

(B)oiler-(oil tanker)

[JJ109]

Kettle in cockney rhyming slang is a watch (kettle and hob / fob = watch)

a. any of the usually four-hour periods beginning at midnight and again at noon during which part of a ship's crew are on duty
b. those officers and crew on duty during a specified watch

[aelmpvw]

otter?

[bhg481]

I like ael's suggestion.