S4C
Mari, Hari a'r Byd Tanddwr
– 07:05
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S4C ·
Mari, Hari a'r Byd Tanddwr
Sign in to favourite this programme– 10:05 UK time
Heddiw, mae dau archwiliwr tanddwr yn ymuno â Mari a Hari wrth iddyn nhw gyfarch Caradog y crwban â'i gragen galed. Learn about Mari and Hari's hard-shelled friend, Caradog the sea turtle!
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