besaferbeseen · merthyr mermaid · open water · open water safety · swim secure · tow float · wild swimming · May 27, 2021 Cath Pendleton, The Merthyr Mermaid Cath Pendleton became the first woman to complete a Zero Ice Mile in 0.03°C water and -3.20°C air in 32 minutes 54 seconds in Antarctica. Learn More