If you’ve ever been in the ocean, you’ve tasted that salt. But where does it come from? And why aren’t lakes and rivers salty too? A sea shanty is probably the best way to explain, right? Plus: we learn about the weird and wonderful world of deep ocean hot springs.
A look at hydrothermal vents
Footage of the crew of E/V Nautilus discovering a hydrothermal vent near the Galapagos Islands: