> 'Je sais' may look very different to 'yo sé', but (in some spanish-speaking regions at least) they're pronounced almost identically.

I speak French natively and Spanish fluently. I also listen to a fair amount of Reggeaton, which is quite often in Spanish spoken with a Puerto Rico accent.

I always find it interesting how the Puerto Rican pronunciation of "Yo soy" sounds so very close to the southern French pronunciation of "Je suis".

https://www.youtube.com/watch?v=syGLsyTQwW4

"Si tu eres un caballo, je suis el dueño del hipódromo"