In my garden...

...two dolphins.

I blipped them in 2015
https://www.blipfoto.com/entry/2008968919800349033

And then again as they got a bit more derelict in 2016
https://www.blipfoto.com/entry/2236227466202975988

Their wood now is very soft and is definitely bug hotel. I doubt they will last another winter intact. So from the photo I took today on my iPhone, I put it through Snapseed and played a little to make it seem as though they were in the sea. It took me longer than usual, took me an hour to achieve this effect.

J gave me these in 2004 or 2005

So they have been in my garden about 14 years, but the dolphins are older than that.