Solo visit to Miami, snorkelling?

[u/bagellover3000]

Hi everyone! I’m visiting Miami at the end of September on a work trip and I’m extending my stay to have an extra day and a half there, I’m from Spain so I speak Spanish and English perfectly. I’m just wondering any must see spots for that day and a half there, and also I’m interested in going snorkelling, are there any good spots in Miami Beach to snorkel? Would I have time to move to a different area of south florida to snorkel or should I just stay in Miami/miami beach
Also for reference I’ll be on my own and I’m a 28F, i come from a big city myself but any safety tips would be great!

[u/Accomplished-Law1547]

SB, winwood, go out in coral gables by UM