All articles tagged with #ocean
A wildlife photographer captured close-up footage of a blue dragon nudibranch feeding on venomous prey near Gran Canaria, showing how it steals venom from victims like Portuguese man o’ war and Velella velella for defense; the scene occurred as winds pushed open-ocean species toward shore, offering a rare, bittersweet glimpse of these open-water creatures during their coastal journey.
A study of 24 enclosed Martian craters in the northern hemisphere finds evidence for a planetwide groundwater system that persisted after surface water declined, with water migrating into deep, interconnected underground reservoirs likely fed by a vast ancient ocean about 3–4 billion years ago. Minerals such as clays and carbonates at several sites suggest habitable conditions in the subsurface and the potential preservation of biosignatures in buried sediments.
Coastal deserts form where cold ocean currents chill the air and fog limits moisture, while nearby mountains create rain shadows that block precipitation, producing arid zones right along shores (as seen in the Namib and Atacama).
A computer-modeling study indicates Europa’s global ocean may lack the energy needed to support life because its rocky interior is largely quiet and tidal heating is weak. Energy would be scarce for potential ecosystems, confined to shallow rocky zones or radiolysis-driven chemistry, making life less likely overall. The findings help guide the Europa Clipper mission’s search strategies, but confirmation would require direct samples from the ocean.
A U.S. Navy hydrophone recorded a strange 52-Hz whale call in the Pacific starting in 1989, a frequency higher than typical baleen whales. Woods Hole researchers followed the single-singer call for about 12 years, naming the animal Blue 52, though its exact species and identity remain unknown. Theories include a malformation or a hybrid; there is no evidence the whale is truly lonely. The case popularized the idea of the “loneliest whale,” intertwined with concerns about how ship noise affects whale communication, and the animal has never been visually observed.
In Western Australia, 13-year-old Austin Appelbee swam about 4 km through rough seas to reach shore and call emergency services after his mother and younger siblings were swept out to sea. The family drifted roughly 14 km offshore before being found; Austin later sprinted 2 km to reach a phone. All were rescued with minor injuries and are recovering.
A 13-year-old boy paddled back to shore after his kayak took on water and then swam about four hours to raise the alarm when his family was swept out to sea off Quindalup, near Geographe Bay in Western Australia; a multi‑agency rescue saved his mother and two siblings, who were treated at a medical center, with authorities praising the boy’s courage and highlighting the dangers of changing ocean conditions.
New high-resolution imagery from Mars orbiters shows delta-like, fan-shaped deposits at the Coprates Chasma end of Valles Marineris, suggesting Mars once supported a vast, Earth-sized ocean in its northern hemisphere, implying long-lasting surface water and potentially connected water systems in the planet’s past.
A recent study suggests that the search for life on Europa, a moon of Jupiter with a subsurface ocean, may be futile due to lack of sufficient internal heat and tectonic activity, casting doubt on the presence of habitable conditions despite upcoming missions like NASA's Europa Clipper and ESA's Juice.
A woman drowned after being swept into the ocean at Sydney's Maroubra Beach on New Year's Day amid dangerous surf conditions, which also led to a missing swimmer at Coogee Beach and multiple rescue operations along the NSW coast, prompting warnings to stay out of the water due to hazardous conditions.
Scientists propose that radioactive elements seeping from Europa's rocks into its subsurface ocean could generate enough energy to support microbial life, offering an alternative to internal heat as a source of habitability. The upcoming NASA Europa Clipper mission may test this theory, which is inspired by Earth's chemosynthetic ecosystems.
Recent analysis of NASA's Cassini data suggests that Saturn's moon Titan does not have a global subsurface ocean but instead has a slushy, semi-solid interior with potential pockets of liquid water near its core, altering previous beliefs about its habitability.
New analysis of data from NASA's Cassini mission suggests that Titan, Saturn's largest moon, likely does not have a deep liquid water ocean beneath its surface as previously thought. Instead, it probably contains a thick, slushy layer of ice and water, which could still support some forms of life in isolated pockets of liquid water, potentially improving the prospects for habitability. These findings will influence future missions like NASA's Dragonfly and our understanding of icy worlds.
Two paragliders crashed into the ocean off Malibu after getting lost in fog, but two sheriff's deputies heroically rescued them, cutting cords and ensuring their safety without injuries.
Australian surfers captured a recurring and mysterious ocean 'glitch' involving a vortex and a towering saltwater pillar, which remains unexplained and is considered a rare, spectacular natural phenomenon.