The bigger the crab, the more sad the seafood lover

Scientists at the Center for Fisheries Research at the University of California found that high levels of carbon dioxide in the air have made crabs bigger, faster and harder. However, it is sad news for those who like to use seafood.

The crab quickly smashed the oyster shell and ate it like a monk
Death ripped off the sheep '. (Photo: nationalgeographic.com)

The team thinks that oceans are now absorbing more and more carbon dioxide from the greenhouse effect due to global warming. Therefore, seawater will increase acidity and more carbon. Crabs that live in such water environments will be bigger, grow faster and have a tougher shell.

However, this is sad news for those who prefer to use seafood, because oysters are the favorite food of crabs, so oyster density will decrease. On the other hand, because crabs grow fast, they are mostly big and hard but their flesh is low. The increased acidity of water also causes other organisms, from plankton to scallops to grow slowly and with less meat.

An experiment conducted by the team in 2009 found that in a high water carbon environment, a type of blue sea crab that lives in the North East Coast of the US called Chesapeake is four times faster than when living in the environment. low carbon concentration.

In another experiment in 2011, the team dropped crabs and oysters into high-carbon water tanks, crabs quickly smash oysters and eat meat like 'lions tore sheep'.