Press publicity made by a diver (6)
I believe the answer is:
splash
'press publicity' is the definition.
'splash' can be an answer for 'publicity' (I've seen this before). I am not sure about the 'press' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for splash that I've seen before include "Spatter liquid about" , "not much rain" , "Bright patch of colour; cause water to fly" , "Effect of hitting water (or headlines!)" , "Cause liquid to fly about in drops" .)