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dongasaurus t1_iy436ut wrote

Reply to comment by obsertaries in TIL More than 80 percent of the ocean has never been mapped, explored, or even seen by humans and as a result, we know more about the surface of Mars than Earth by [deleted]

We definitely track where they go, maybe not where they are when they’re deep underwater, but individuals can be tracked as they migrate between eastern Canada, Europe, gulf coast, etc.

Edit: some of these tags also measure depth, so it’s pretty safe to say we know where they go.

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