By Lars Bevanger BBC News, Norway Environmentalists and
fishermen in northern Norway are warning of a Russian invasion
of alien crustaceans which are threatening to ruin the local sea
fauna. They say the giant red king crab is spreading with
alarming speed from Russian waters along the Norwegian coast,
destroying everything in its wake. The crab has few natural
enemies, and is considered to be an omnivore, digesting
everything from cod larvae to other crabs. But it is also a
sought-after delicacy. Lars Petter Oeye takes gourmet tourists
on fjord crab safaris near the border with Russia, high up in
Norway's Arctic north. Here, crabs are picked off the sea floor
by divers. Mr Oeye says the fjord is crawling with them. "It is
not abnormal that you might see 10,000 crabs together. It might
look scary, because people don't know that this is the way king
crabs behave. "I started to dive in 1987. At that time we had
found the first crabs in these waters, but we never saw king
crabs in shallow depths or in diving dep