Where North meets South in the sea

(Phys.org) -- The Atlantic Ocean off Nova Scotia ... and off Florida. Along some 2,000 miles, its waters go from icy to steamy. Can a marine species live in both temperatures--and everywhere in between?

Australia 'has two distinct white shark populations'

(Phys.org) -- A new scientific study has identified two distinct populations of white shark at the east and west of Bass Strait in Australian waters, prompting researchers to suggest the huge fish may need regional conservation ...

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