Pam y mae barn arbenigwyr ar natur gymdeithasol yr octopws wedi newid? Dr Gethin Thomas sy'n trafod. Aled asks Dr Gethin Thomas about the social behaviour of the octopus. Show more
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Pam y mae barn arbenigwyr ar natur gymdeithasol yr octopws wedi newid? Dr Gethin Thomas sy'n trafod. Aled asks Dr Gethin Thomas about the social behaviour of the octopus. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
