| Country | Locality | Absolute Fecundity | Relative Fecundity | Fecundity/length relationship | ||||
| min | max | Min | Mean | Max | a | b | ||
| Adriatic Sea | 0 | 400,000 | ||||||
| Bay of Biscay (1996-1997, 1998) | 44,285 | 981,668 | ||||||
| Bay of Biscay, 1994-95 | 0 | 0 | 298 | 957 | 1606 | 2.29 | 2.144 | |
| Mediterranean | 2,000,000 | 7,000,000 | ||||||
| North Sea | 18,710 | 577,302 | 26 | 167 | 426 | 3.618 | ||
| North Sea (northern) and Skagerrak | 2,000,000 | 7,000,000 | ||||||
| France | Bay of Biscay_B | 0 | 0 | 0.25 | 3.03 | |||
| Greece | Aegean Sea | 10,100 | 535,000 | |||||
| Greece | Aegean Sea (1976-1977) | 10,100 | 540,000 | |||||
| Greece | Porto Santo Stefano, Northern Tyrrhenian Sea (1992) | 0 | 0 | 2.54 | 3.07 | |||
| Greece | Saronikos Gulf (1976-1977) | 0 | 0 | 310 | 0.0295 | 3.33 | ||
| Greece | Saronikos Gulf (1976-1977) | 10,100 | 535,000 | 0.000301995 | 3.33 | |||
| Iceland | West Iceland | 2,000,000 | 7,000,000 | |||||
| Italy | N. Tyrrhenian Sea | 25,238 | 562,440 | 80 | 202 | 568 | 0.0039 | 2.7268 |
| Italy | Tyrrhenian Sea (1993) | 0 | 2,916,000 | |||||
| Morocco | Moroccan coasts (2001-2003) | 39,962 | 965,770 | |||||
| Portugal | Portuguese coast 38°00´ - 39°31´N, 1965-66 | 94,000 | 854,000 | |||||
| Spain | Bay of Biscay, 1994 | 1,038,960 | 3,756,240 | 298 | 957 | 1606 | 2.29 | 2.144 |
| Spain | Bay of Biscay, Jan-June 2003-2004 | 52,000 | 560,000 | |||||
| Spain | Bay of Biscay_A | 0 | 0 | 0.144 | 3.27 | |||
| Spain | Catalan Sea | 17,296 | 681,489 | 53 | 204 | 461 | 0.0026 | 2.8349 |
| Spain | Galician Shelf | 46,000 | 580,000 | |||||
| Spain | Galician Shelf (2003-2004) | 271 | 835,230 | |||||
| UK Scotland | Scotland | 2,000,000 | 7,000,000 | |||||