S4C
Y Tralalas
– 09:05
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S4C ·
Y Tralalas
Sign in to favourite this programme– 16:05 UK time
'Da chi wedi dychmygu beth sydd o dan y don? Dewch ar antur gyda Harmoni, Melodi a Bop i weld yr holl greaduriaid anhygoel sy'n byw yno. Have you ever wondered what's under the sea...?
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S4C
Y Tralalas
– 09:05