8,245 results
8,245 results for: Fish
- Oceans
Oxygen in Black Sea has declined by more than a third since 1955
The Black Sea’s oxygen-rich surface layer shrank by more than a third from 1955 through 2013, compressing marine habitats and bringing toxic hydrogen sulfide closer to the surface.
- Animals
Cone snail deploys insulin to slow speedy prey
Fish-hunting cone snails turns insulin into a weapon that drops their prey’s blood sugar and eases capture.
- Genetics
For penguins, it’s a matter of no taste
Penguins lack taste genes for bitter, sweet and umami.
- Oceans
Giant barrel sponges are hijacking Florida’s coral reefs
Giant barrel sponges are gradually taking over and threatening Florida’s coral reefs, a new census suggests.
- Animals
A summer challenge: Observe nature
Opportunities for observing nature are plentiful, no matter where you live.
- Environment
New desalination tech could help quench global thirst
Designed with better, more energy-efficient materials, next-generation desalination plants may offer a way to meet the world’s growing need for freshwater.
- Animals
Ecotourism could bring new dangers to animals
The presence of kindly tourists could make animals more vulnerable to predation and poaching, a new study warns.
- Life
Fossil fish eye has 300 million-year-old rods and cones
A fossil fish shows the earliest evidence of rods and cones, cells essential for color vision in vertebrates.
- Life
Bolder snails grow stronger shells
Bold snails have tougher shells than shy snails. Understanding what drives snails to develop such differences is a bit of a challenge.
- Plants
Marsh grass masquerades as a native species
The abundant cordgrass found in South American marshes may actually have invaded the region more than two centuries ago, a new study concludes.
- Animals
A fish reared out of water walks better
The normally aquatic fish Senegal bichir raised on land suggests how ancient species might have transitioned into terrestrial ones.
- Animals
Stretchy nerves help some big whales open wide
Blue whales and their closest relatives have stretchy nerves near their mouths so they can open wide and swallow a lot of prey.
