Author: Angie Roberts, Dyfan Roberts.

When ten year old Arwana Swtan arrives in the town of Caernarfon to stay with her grandad, Taidi, things look very bleak for the town. The fish have all disappeared and everyone is dirt poor. But once the inimitable mermaid Swigi Dwgong makes an appearance, things start to look up. A fast, highly entertaining and hugely funny novel. A must-read.

Awdur: Angie Roberts, Dyfan Roberts.

Dyma nofel fer a doniol dros ben gan awdur sy'n gwybod sut i ddiddori a phlesio plant. Mae pethau'n ddiflas iawn yng Nghaernarfon pan mae Arwana Swtan yn cyrraedd yno yng nghanol storm fawr i aros efo'i thaid, Taidi. Ond diolch i'r fôr-forwyn hynod honno, Swigi Dwgong, daw tro ar fyd i'r dre a'i phobol. Stori gyflym, glyfar a llawn hiwmor.