Along the way they will be recording any sightings of whales or dolphins along the way using forms supplied by the IWDG.
And the IWDG is currently offering places on board to all members for both week-long legs of the cruise.
The vessel has eight berths that will comfortably sleep a team of one skipper and seven crew - indeed, anyone taking up this offer will be expected to prepare meals and perform other sailing duties!
For more details on how to join The Gathering Cruise on board Celtic Mist, see the IWDG website HERE.
In the meantime, Celtic Mist is offering all IWDG members a chance to sail on day trips from Dun Laoghaire this week - email [email protected] for details.