I lifted these lines right off his blog.  What a great adventure.

“After a 4 1/2-month bicycle expedition around northwestern Europe, Joshua Sivarajah and his pint-sized paddling partner, Nero, weren’t ready for the adventure to end. So, they swapped bike for board, and embarked on a 1,777-mile journey down the Danube River—the continent’s second-longest river, nicknamed “Europe’s Amazon.” Photo: Joshua Sivarajah/ULI”

I found the site by looking for SUP sites, and sure enough he rides a SUP in some pretty interesting conditions.

As it turns out Joshua did some humanitarian work while on his trip by serving sandwiches for the Syrian refugee crisis.  Check it out here.