Listen to this marine group start fishing (7)
I believe the answer is:
podcast
'listen to' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'marine group start fishing' is the wordplay.
'marine group' becomes 'pod' (I am not sure about this - if you are sure you should believe this answer much more).
'start fishing' becomes 'cast' (I've seen this in another clue).
'pod'+'cast'='PODCAST'
'this' is the link.
Can you help me to learn more?
(Other definitions for podcast that I've seen before include "Audio file distributed over the internet" , "internet feature" , "Downloadable multimedia file" , "Distribute file(s) via internet to personal computers for playback" , "digital recording" .)