Go "eco" in salt? Strangely, there's nothing in it for this scientist (12)

'scientist' is the definition.
(I know that oceanologist is a type of scientist)

'go eco in salt? strangely there's nothing in it for' is the wordplay.
I cannot really understand how this works, but
an anagram of 'eco' is 'oce' which is located in the answer.
'there's' could be 'n' (I've seen this in other clues) and 'n' is located in the answer.
'nothing' could be 'o' (looks like zero - 0) and 'o' is found within the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

'this' acts as a link.

Can you help me to learn more?