The pools on the Sapphire (and Diamond) Princess are:
Neptune's Reef and Pool on Lido Deck;
Calypso Reef and Pool on Lido Deck;
Terrace Pool, aft on Aloha Deck;
Lap Pool at Lotus Spa on Sun Deck, and
Splash Pool, aft on Sun Deck.
The Calypso Reef and Pool is covered.