Fur seals were once hunted almost to extinction. Careful conservation measures have helped the species to rebound. They have reached record levels - an estimated four million worldwide. This has however led to fears that soon there may be too little food in the Southern Ocean to enable the area's other wildlife - whales and penguins - to survive. The key is Krill. It is feared that the spurt in the population of Seals is denying other wildlife proper access to Krill. Conservationists believe that if the present trend continues we may have to think of culling Fur Seals in the immediate future.