A once-predictable system shifts out of balance
'Ear stones' provide clues to help restore river herring
Satellite tags reveal hidden world of ocean's largest fish
'One-pot' approach could speed syntheses of new products
Drones give researchers an unparalleled view of marine mammal health
For scientists who study Antarctic zooplankton or who need to repair a crucial ocean-observing instrument in the middle of winter, donning a drysuit and plunging into frigid waters is all in a day's work.