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Table 1. Yearly strength of the Tsushima Warm Current, snowfall and occurrences of giant squid along the coast of the Sea of Japan. The shaded area indicates the years with the following relationships: heavy snowfall during the following year when the Tsushima Warm Current is strong in autumn, giant squids occurred with high frequency on the following year or year after when there was heavy snowfall. *1: based on Nishimura et al.18) (1997–2005) and “Time Series of Tsushima Current Area” published by the Japan Meteorological Agency19), *2: Seasonal Snow Depth Index20) 0.3 or above, *3: numbers are same as Fig.1.

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