Thursday, 24 May, 2012

Study shows the wisdom of allowing fish stocks to recover. Production is higher, but costs are lower. What would it take to bring economic and environmental sanity to the fishing industry?

Some people find sea gulls annoying, but they have their uses.

Gills are the equivalent of a mammal’s lungs, says Jeffrey Malison, director of the aquaculture program at University of Wisconsin-Madison. “Their primary purpose is to exchange gases, take oxygen in and release carbon dioxide out of the fish.” Both lungs and gills have a bed of very small blood vessels with thin walls that the [...]

Big sharks eat little sharks and rays, which eat shellfish. So ultimately, hunting big sharks may cause shellfish to disappear.

How’s a hungry fish supposed to make a living in the shallow water below tropical mangrove trees? Hint: Squirt, squirt!

Feeling burned? Farmed salmon have higher levels of a brominated flame retardant than wild salmon.

New tracking systems watch long-distance migrants move across the ocean. Follow whales, turtles and albatrosses across the watery planet.

Arrival of snakehead fish raises question of invasive species, weeds and exotic species. Meet 8 of the worst.

Protecting small fish may cause a genetic change that promotes slow-growing fish. Is it smarter to protect the large fish instead?

New study links long-term changes in salmon population to climate changes.