Table 1 Recent pup production and trends of grey seal breeding stocks in the North Sea
From: Rapid increase of the grey seal (Halichoerus grypus) breeding stock at Helgoland
Location | Breeding since | Pups in 2006 | Recent trend (% per year) |
|---|---|---|---|
Isle of May (GB) | 1960s | 1,800 | ±0 |
Fast Castle (GB) | Mid 1990s | 700 | 15 |
Farne Islands (GB) | Unknown | 1,200 | ±0 |
Donna Nook (GB) | Early 1970s | 1,000 | 14 |
Blakeney Point (GB) | Late 1990s | 230 | 50 |
Horsey (GB) | Late 1990s | 130 | 25 |
Dutch Wadden Sea (NL) | Mid 1980s | 200 | 20 |
Helgoland (D) | Late 1990s | 30 | 35 |
Amrum (D) | Early 1980s | 25 | 13 |