Kamakura beaches

Wanna come and check black sand beaches, come to Kamakura town! May visit few of named beaches among the shore exciting by surfers. May walk on foot (like me) and use local railroad also passing among the shore (but not JR). By the way Hokuriku JR pass (West+East) does not include Kamakura area from Tokyo, that surprised me a lot. Ticket to and from Kamakura costs 660+830Y and take 1 hour.