yes to the bus.
also, be aware that the bus drivers using their discretion can deny a ride due to being wet and / or sandy.
the snorkeling at arashi is not so great imo.
catalina cove, boca catalina and malmok area are good snorkeling areas and bus ride accessible.
everyone should please be certain NOT to leave valuable belongings laying on the beach while snorkeling.
all need to be aware of their surroundings.
towels and flip flops, i can say with great certainty, will be fine being left on the beach.
tablets, electronics, cameras, etc….do not chance it.
get yourself a PAC SAFE or an VACATION VAULT , attach to something "permanent" on the beach.