1 Academy Ruins
1 Coral Atoll
1 Dark Depths
1 Halimar Depths
1 Ice Floe
1 Lonely Sandbar
1 Mikokoro, Center of the Sea
1 Moonring Island
1 Remote Isle
1 Saprazzan Cove
1 Saprazzan Skerry
1 Seafloor Debris
1 Shelldock Isle
1 Teferi's Isle
1 Bident of Thassa
1 Breaching Leviathan
1 Breaking Wave
1 Capsize
1 Chasm Skulker
1 Clutch of Currents
1 Colossal Whale
1 Crush of Tentacles
1 Deep-Sea Kraken
1 Dream Tides
1 Giant Oyster
1 Great Whale
1 Grip of the Roil
1 Gush
1 High Seas
1 High Tide
1 Into the Roil
1 Kederekt Leviathan
1 Lingering Mirage
1 Master of Waves
1 Mystic Remora
1 Pull from the Deep
1 Reef Worm
1 Sandbar Serpent
1 Sapphire Medallion
1 Scourge of Fleets
1 Sea God's Revenge
1 Sea Scryer
1 Sea's Claim
1 Seasinger
1 Shipbreaker Kraken
1 Spreading Seas
1 Star Compass
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Submerge
1 Thassa, God of the Sea
1 Tidal Force
1 Tidal Wave
1 Tideforce Elemental
1 Treasure Cruise
1 Wall of Water
1 Whelming Wave
Sideboard:
1 Aetherspouts
1 Coastal Piracy
1 Commandeer
1 Deep Water
1 Displacement Wave
1 Everflowing Chalice
1 Ghost Ship
1 Giant Shark
1 Hammerhead Shark
1 Iceberg
1 Island of Wak-Wak
1 Keiga, the Tide Star
1 Lorthos, the Tidemaker
1 Merchant Ship
1 Mystic Compass
1 Pirate Ship
1 Research the Deep
1 Rishadan Port
1 Rising Waters
1 Rootwater Thief
1 Seafarer's Quay
2 Serpent of the Endless Sea
1 Shorecrasher Elemental
1 Soaring Seacliff
1 Sunken City
1 Sweep Away
1 Wake Thrasher
1 Waterwhirl