If you read down into the comments section of the news story, it appears they found the wrong guy and the camera wasn't his. They're still looking for the owner.
"Update: The camera owner has not been located. A number of comments claimed to have located the camera owner after calling the fire department. I checked the individuals facebook page and he appeared initially to be a match. Upon closer inspection this is not the case, although I have not heard back from him, a number of details prove the photos cannot be his (one being that their child was not born when the photos were taken). I apologise for the premature update (I never expected this to go viral). The search continues. Regardless â€“ thankyou to everyone who responded â€“ we will find the individual and prove that the google+ hive-mind can be utilized to complete a simple gesture like returning someones photos
Actually finding and identifying the owner and publishing a heartwarming story about it, only to find out you have the wrong guy is an even more telling story about social networking. I don't mean that in a cynical way, it's just fascinating that one would not wait for the identified guy to say yea, I lost a camera in the ocean, it's mine.