When a fish opens its mouth, the flap closes, drawing water into the mouth. As the fish closes its mouth, the flap opens. Oxygen is extracted from the water as it passes over the gills.

How to remove them. If you decide to remove the gills from your portobello mushroom, all you’ll need is a spoon. Remove the woody stem, and either mince it finely and cook it with the rest of ...

Humans' outer ears may have evolved from the gills of prehistoric fish, a new study finds. Gene-editing experiments indicate ...

The fish's blood pH initially fell by 1.2 units, but after just a few hours their gills were able to correct this by bringing in bicarbonate ions from the surrounding water.

Freshwater fish take up chemicals from the surrounding water through their gills Biologists have cast doubt on the long-held theory that fish gills evolved primarily for the purpose of breathing. The ...

These fish are the best sources of protein, a nutrient required for muscle-building and weight-loss. Here's how to cook them, calorie counts, and omega 3s. 18 Fish That Are Stuffed to the Gills ...

This fish, called Metaspriggina, doesn’t look like a game-changer, but it’s the first step towards modernity.Metaspriggina, which emerged 505 million years ago, has all sort of wild ...

Scientists believe human limbs evolved from the gills of sharks - thanks to a gene named after Sonic the Hedgehog. The discovery comes from analysis of skate, a cartilaginous fish which has much ...

WELL, the first thing to say is well done. Well done for progressing to the fourth round of the FA Cup. Well done for avoiding what was a potential… ...

After being swallowed alive, Japanese eels were able to escape from a predator fish’s stomach and swim to freedom through the fish’s gills, new research shows.

Gene-editing experiments indicate that cartilage in fish gills migrated into the ear canal millions of years ago during the course of our evolution.Going even further back, our outer ears may have ...