Walking up and down the stairs instead of taking the lift is good exercise, and I am a frequent user of the staircase at the Science Centre.
Imagine my surprise, then, when I discovered that one of the tiles on those very stairs had a fossil fish embedded that I had never noticed before!
Judging from the position of the mouth, nostril, eye and especially the the gill slits, this seems to be some sort of ancient blunt-nosed shark, complete with pectoral fins and tail fin. Only the dorsal fin seems missing.
How could I have missed that for so long? I obviously have to pay more attention when I walk up and down the stairs…
Update 20 Feb: The fish has disappeared. It seems, that ‘fossil’ was just a mud stain left by one of the many kids returning from their visit to the Ecogarden… ; )