"Designed for surface swimmers, which most snorkelers are Force Fin's new Beavers have "shark's teeth" attachments that give the fins greater directional control and can be rotated to adjust to your kick..."

"Force Fin's Tan Deltas, shaped like the caudal fins of big, ocean-running fish, are truly rad. Unlike most fins, they flex into a curl in both kick phases, so they're easier on your legs without sacrificing speed. The V shape gives you more control, and the open-toe design prevents cramping..."