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Seren Fôr
Beth am blymio'n ddwfn o dan y don i gwrdd â Seren Fôr a'i ffrindiau. Dive down to the depths of the sea to meet Seren Fôr (Starfish) and her friends.
Ar iPlayer
’Dyw’r rhaglen yma ddim ar gael ar BBC iPlayer ar hyn o bryd
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