Remove pool shower?

[#1]

We want to change the shower that we have in the pool for another that incorporates a footbath, but we have no idea how to remove the one that we have since, at first glance, it does not seem to have a screw, nor can it be removed with a screw.

I leave you a photo of the shower and the part that is fixed to the floor, to see if you can help us.

Thank you!

[#2]

We want to change the shower that we have in the pool for another that incorporates a footbath, but we have no idea how to remove the one that we have since, at first glance, it does not seem to have a screw, nor can it be removed with a screw.https://100001.onl/ https://1921681254.mx/ https://happymod.site/



I leave you a photo of the shower and the part that is fixed to the floor, to see if you can help us.



Thank you!