I don't know if snorkel gear can be rented at Hilton Head. I always take my own because often times the gear you rent will be wore out. Good snorkel gear isn't that expensive and it packs well into luggage. Take your own mask and snorkel at least, you will be glad you did. Rent fins would be OK.
snorkel
a snorkel.
A great place to snorkel is in Malta (Europe)
Snorkel
snorkel (it stays the same)
Cozumel Emerald was created in 1885.
Cozumel raccoon was created in 1901.
Tourism is by far the largest industry in Cozumel.
The area of Cozumel is 647.33 square kilometers.
Cozumel is an island, and the only settlement on it is the town of San Miguel de Cozumel (pop: 77,236).
The chances of a hurricane hitting Cozumel is 100%. Hurricane Wilma hit Cozumel in October, 2005.