Pink salmon, purple Asian clams, marine invertebrates that form spaghetti-like colonies and a nematode worm that causes extensive deaths of trees are among the new entries in an experts' watchlist of ...

A small but harmful invasive species was discovered on ... crabs damage habitats and disrupt life cycles for shellfish, salmon, and orcas. The European green crabs damage salmon spawning habitats.

Pink salmon, Purple Asian clams ... deaths of trees are among the new entries in experts' watchlist of invasive non-native species that could threaten Great Britain in the next 10 years.