Similar openings on the sea floor were first spotted 18 years ago along the Mid-Atlantic Ridge. Their origins remain unknown. Scientists are asking the public for their thoughts.
In the past month, dead anchovies have been spotted on the streets of San Francisco. Last week, thousands appeared at the edge of a lagoon about 30 miles north.
Once hunted to the brink of extinction, fin whales in the Southern Ocean have rebounded and returned to their historic feeding grounds, according to a new survey.