On a new world (9 days), going out into the water in a certain direction of the starting island will always results in a crash-to-desktop.
Screenshot with error in attach (I'm not sure how to locate the save-file, don't see anything likely in ~/.steam/steam/userdata).
Rev.1652276 LINUX_STEAM
Linux fyr 3.13.0-45-generic #74-Ubuntu SMP Tue Jan 13 19:36:28 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Steps to Reproduce
Travel on water towards stungrays (I presume)
Travel on water towards stungrays (I presume)