To make sure they're not missing something, researchers have been using ships to drop off and later
retrieve ocean bottom seismographs.
Not exact matches
During a trawl for sea creatures on the
bottom of the Arctic
Ocean last month, scientists on the RV Helmer Hansson in Rijpfjorden on the island of Spitsbergen, Norway,
retrieved a 7 - meter - long log infested with living shipworms on the sea floor under 250 meters of water.
It ended up at the
bottom of the
ocean after Cap crashed into the ice and saved the day, but was
retrieved by Howard Stark (that's Iron Man's Dad) while he was looking for Cap.
Moorings on the
ocean bottom can measure temperatures at fixed distances above the
bottom, until a ship
retrieves the instruments — typically after a few months or years.
Researchers sifted through 30,000 years of dust and
ocean bottom muck
retrieved with
ocean drilling ships.
Scientists used the hulking machine to
retrieve ancient, fossilized coral from the
bottom of the
ocean.