Hunts and Allied seals

Can someone please explain hunts to me and why I've been reading people already have 100+ even though they are a daily and weekly thing?

There are random NM in each zone, and each of them pop for different circumstances. You will always get seals from them based on their rank.

If the patch notes weren't clear, I would suggest reading the recent Letter from the Producer. He explains how the Hunt works.

There are already linkshells full of people who are farming these (some probably have all day and night to do so). They know where to find and kill them, they die fast...everyone else is oblivious.