Hydrotouring via Lunocet

Why not?

Dolphin-Inspired Man-Made Fin Works Swimmingly: Scientific American

.... Using the Lunocet, some swimmers are close to being able to breach completely out of the water, like whales. Ciamillo envisions a new high-speed, free-diving community of swimmers united around 'hydrotouring': long-distance swimming expeditions using Lunocets to cover dozens of miles a day, with participants carrying streamlined, waterproof packs containing only a global positioning system (GPS), satellite phone, and enough food and water for a few nights on shore...