How do series like Planet Earth capture footage of things like the inside of ant hills, or sharks feeding off of a dead whale?

Question

Partially I’m wondering the physical aspect of how they fit in these places or get close enough to dangerous situations to film them; and partially I’m wondering how they seem to be in the right place at the right time to catch things like a dead whale sinking down into the ocean?

What are the odds they’d be there to capture that and how much time do they spend waiting for these types of things?

In: Technology

Answer 1

Some of the dead whale scenes they were able to capture because they followed a whale that beached itself, died, and was dragged to open water so it didn’t rot on the beach.