449 results
449 results for: Dolphins
- Particle Physics
Readers puzzled by proton’s properties
Readers sent feedback on under-ice greenhouses in the Arctic, the Martian atmosphere and more.
- Health & Medicine
As algae blooms increase, scientists seek better ways to predict these toxic tides
Scientists around the United States are developing programs that can predict harmful algal blooms in advance.
- Animals
Elephant seals recognize rivals by the tempo of their calls
The distinct sputtering-lawnmower sound of a male elephant seal’s call has a tempo that broadcasts his identity to competitors.
- Paleontology
Ancient whale tells tale of when baleen whales had teeth
A 36 million-year-old whale fossil bridges the gap between ancient toothy predators and modern filter-feeding baleen whales.
- Animals
Snot could be crucial to dolphin echolocation
An acoustic model reveals that echolocation relies on mucus lined tissue lumps in the animal’s nasal passage.
-
For harbor porpoises, the ocean is a 24-hour buffet
Scientists tagged harbor porpoises with monitoring equipment and found that the small cetaceans eat thousands of fish throughout the day.
- Animals
Whales are full of toxic chemicals
For decades, scientists have been finding troublesome levels of PCBs, mercury and other toxic chemicals in whales and dolphins.
- Paleontology
New dolphin fossil makes a splash
A newly discovered dolphin fossil provides clues to the evolution of river dolphins in the Americas.
- Paleontology
New dolphin fossil makes a splash
A newly discovered dolphin fossil provides clues to the evolution of river dolphins in the Americas.
- Paleontology
New fossil suggests echolocation evolved early in whales
A 27-million-year-old whale fossil sheds light on echolocation’s beginnings.
- Environment
PCB levels still high in Europe’s killer whales, smaller dolphins
PCBs banned for decades still show up at extremely high concentrations in Europe’s killer whales and other dolphins.
- Anthropology
Humans, birds communicate to collaborate
Bird species takes hunter-gatherers to honeybees’ nests when called on.
