Scientists also fear native species of crab could be overwhelmed like the red squirrel, on the verge of extinction after being pushed out by greys from the US.

• 科学家同样也担心英国当地的蟹种的生存会受到打压，就像当年从美国引进灰松鼠导致英国本地的红松鼠几乎绝迹一样。