Snorkelling in okinawa

Am headed to Okinawa next week and planning a few snorkelling stops around Kerama Islands.

Just wondering what is the protocol around snorkelling from shore? Should we bring our own snorkels, fins, and floats if we have them? Would fins be better, or booties?

Want to be careful with the corals / sea urchins/ any dangerous marine wildlife too so all advice welcome. Thanks.

by Upset-Tone3667