Hi Murph,
Swimming is swimming but the ocean is definitely not like a pool or even one of the great lakes. My first visit to Myrtle Beach South Carolina I had my own experience with a riptide and yes it was scary at first but once I understood what was happening it was OK, I had heard about riptides but had no previous personal experience. Just had to go with the flow, ended up a long way down the beach from where I had entered the water initially! I am or rather was a strong swimmer but felt quite helpless for a few minutes. Left with a healthier respect for the power of water/waves. Really a good informative post Murph, albeit the tragic loss of live, I am sure your bringing this up has the potential to benefit others if they face similar circumstances. Just my .02
Jeff