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This is OnPoint. I'm Megna Chakrabardi.

Dip a hydrophone in the warm waters of the Gulf of California, just off Mexico.

And if you're extremely lucky, you might hear this.

So, Bikitas are a very small porpoise that is very beautifully colored.

It has a lovely eye patch and sort of black lips.

It sort of has a goth look to it.

Barbara Taylor just retired as senior scientist at the National Oceanic

and Atmospheric Administration's Southwest Fisheries Science Center.

She's been studying the Vakita porpoise for decades,

...