From Maine to Florida, the endangered, prehistoric fish is rebounding, but a recent study shows just how vulnerable the U.S.

But the Iberian Peninsula, which includes Spain and Portugal, is on the other side of the world, touching the Atlantic Ocean. Here, plates instead pull apart down the ocean's middle and form new ...

Fish were caught by local fishermen in the coast of the State of Rio de Janeiro (21-23°S, 42-45°W), Brazil. Hosts were mostly fresh, but some specimens were kept frozen at –20°C, until examination.