A closer look revealed it was a friendly Viking Patrol Shark.
 

No Vikings drowned and were never in any danger. Why you ask. Because we are ready for any situation. We designed an Oxygen Oar. See below.

Next as it looked like we were sinking, we were not . We were headed to our Underwater Superdome , which the location is unknown to the Oppressors. And for the issue of the shark eating up the Viking , no problem there either. We have our own Viking trained Shark Patrol. As noted below.

  Animation by the Happy Little Viking

So as you can see the Vikings are in control.. Now does anyone want to join the elite VRR. We are taking new members all the time.

The HLV