I hope you don't filmed it with your Inspire!
I just love BVI, we spent 2 weeks sailing around and diving! awesome,cant wait to bring my Inspires and Osmo on the next trip.So here is a quick video of some Vortexes I was able to video while snorkeling off Norman Island BVI. I've never seen anything like this before
Most places are so remote I doubt you would have any issues. They will look close at your gear boxes in customs.Are drones illegal in Tortola?