Distribution of Delphinus delphis (Common dolphin) over the years 1966 to 1990 arranged in 5 year blocks. The records show that the species is to be found predominantly in the south west of Britain and that the peak frequency of strandings occurs in the winter months.
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| 1966 - 1970 | 1971 - 1975 | 1976 - 1980 |
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| 1981 - 1985 | 1986 - 1990 |

Cumulative monthly frequencies of strandings of Delphinus delphis (Common dolphin) in the years 1966 to 1990