When endangered killer whales swim through the sheltered waters of Puget Sound, they leave behind traces of 'environmental DNA' that researchers can detect as much as two hours later has found.
Unlike most hermit crabs, the blanket-hermit crab does not use empty shells for protection, and instead lives symbiotically with a sea anemone. The crab uses the anemone to cover its soft abdomen, and can pull the anemone's tissue over its head to protect itself whenever necessary. Since 1888, this crab had been considered a unique species until a research team recently described five new ones and a new genus in the open access journal ZooKeys.
Sonification of 10 years of oceanic migration of these seals reveals coordinated swimming.
An international consortium of scientists is proposing a massive project to sequence, catalog and analyze the genomes of all eukaryotic species on the planet, an undertaking the researchers say will take 10 years, cost $4.7 billion and require more than 200 petabytes of digital storage capacity. Eukaryotes include all organisms except bacteria and archaea. There are an estimated 10-15 million eukaryotic species on Earth.
Researchers have used a scanner designed for rockets to collect the first-ever computed tomography (CT) scan of an entire minke whale. By combining the CT scan results with custom-developed computer simulation tools, the researchers model how the whales hear sounds produced by other whales or by human-created (anthropogenic) sources such as ship propellers.
Using lasers, researchers have connected, arranged and merged artificial cells, paving the way for networks of artificial cells acting as tissues.
A large group of common bottlenose dolphins (Tursiops truncatus) have been spotted in Canadian Pacific waters -- the first confirmed occurrence of the species in this area. The sighting is reported in a study published in the open-access journal Marine Biodiversity Records.
Corals in the Great Barrier Reef have enough genetic variation to adapt to and survive rising ocean temperatures for at least another century, or more than 50 years longer than previous estimates have suggested.
The Bajau, a population of sea nomads in Indonesia, are known for their ability to conduct prolonged and repeated deep dives while holding their breath. A new analysis by University of Copenhagen and UC Berkeley scientists shows that they evolved this ability by enlarging their spleen about 50 percent. A genetic analysis links this to upregulated thyroid hormone. This is a unique adaptation to living in a low-oxygen environment, the researchers say.
Coal mining, under current US regulations, has significantly reduced the abundance and variety of fish, invertebrates, salamanders, and other aquatic life in streams, according to a new study from the University of Tennessee, Knoxville.