Why does a funnel-web spider new to science turn up at just three sites in northern Idaho, about 500 kilometres east of the western Cascades and coast ranges where its genus was known to live?
In 2017, scientists poured Rhodamine WT pink dye into Porter Hole Sink under Florida’s Lake Jackson; 35 days later instruments picked it up at Wakulla Spring through limestone caves
In 2015, University of Florida scientists poured 5 gallons of red Rhodamine dye into Silver River’s main spring vent to track how water moved as the clear spring run turned more algae-green