spap-oop

Why did it have to be snakes?

What data does the tag collect? Is it’s location when it surfaces recorded to give a rough idea of range of the shark? How can you measure the distance the tagged shark travels?

So what sort of techniques could one use to figure out travel in deep sea? Would magnetic fields be a viable option?

Any sonic or VLF beacons that can be triangulated (antenna/transducer challenges notwithstanding)?