I have this too - google trypophobia images, some of them are unbearable, to the point I feel extremely uncomfortable even thinking about them!Holes! Small holes all gathered together my sister used to cut crumpets in half across and I couldn’t look at her! Always thought I was a weirdo and they’d give me the creeps and send shivers down my spine, but there is an actual phobia of it called Trypophobia
I also have a terror of metal in water, especially rusty metal in the sea!