"in the swamp where the strange green"

There is plenty of clean water running through Bushy Park, but when my dog wants to go for a swim what does he want to swim in? Yup, this Futurama swamp. The whole swamp was covered in this toxic green coloured funk and when Morse had finished his swim all the green stuff began to merge back together like the baddie from Terminator 2. It was very cool to watch but Morse was sulphuric when he got out. The whole house stinks now. My mum is none too please.