The Spanish Pond Terrapin (called pond turtle in America) is native to most of the Iberian Peninsula and much of North Africa.
Its head and visible body/legs have narrow yellow stripes on a black background rather than the spots of the European Pond Terrapin.
The yellow spotted and striped terrapin practising swimming out of the water on top of the Yellow-bellied Slider Terrapin is believed to be a young Spanish Pond Terrapin.
Seen in Tenerife, it is far more spotted than the typical Spanish Pond Turtles. (It could even be a hybrid Spanish and European, if they can hybridise?)
The back end is ornate - different from the Slider's back end.
With group of three Yellow-bellied Sliders.
Has less-domed shell and straight back claws.