Yes--it's the same guy--Tomas, the leading player from Hungary. He's a Big Star in Europe, yet very nice, and has a very understated way about him. Although there's no objective reason for it, it sure did seem that the Europeans were much more comfortable with themselves [and being photographed], as well as with each other than the Americans did.
They ALL wear double speedos while competing, no matter what it looked like with Spain. The clawing--the kicking--the dunking going on makes that a practical necessity. Otherwise they'd be stopping the game ALL the time for a player to swim to the side to have the "wardrobe malfunction" fixed.
When in the practice pool, most seemed to be wearing a single speedo, which by all appearances included Tomas.

The black speedos in competition were worn by Hungary.
Although most are quite big guys, there was a broad spectrum of sizes and shapes, from a small, speedy Italian to a huge, monster Greek. Some are very lean like DB's, some are more like defensive ends, depending on the position they play. They all were very focused on the competition, and yet had their playful moments--like the Serb player goofing around and
grabbing the injured Spanish goalie , so clearly they had a lot of respect for each other as well, playing as often as they do.
There were a lot of injuries between the US and Spain, resulting in 5 US players getting stitches, and the cancellation of the scheduled exhibition match the next day. Whether this was due to the much more aggressive US' coach influence, or other factors, clearly Spain did not get along with the US. And there were some bitter laments about the ref'ing from one Canadian official in particular, who allowed the game to get that out of hand.
In some sports, the subtleties determine the outcome. It seems in waterpolo, there is so much going on at once, it's who's going to notice the opportunity amid the chaos to zing the ball in the net at a speed that would take my head off. When constant fouling seems to be the order of the day, it's difficult to see as a spectator which drowning victim is more deserving of a penalty. I can only hope they'll use the underwater cam a lot in Athens to show you--like an iceberg--the rest of the story.
Their strength and ability is stunning to see, and is only partly revealed in photos and on TV. But hopefully these photos give you snapshots of detail that will inform and delight as you watch them during The Games.