1 Cephalid Coliseum
1 Coral Atoll
1 Halimar Depths
30 Island
1 Lonely Sandbar
1 Magosi, the Waterveil
1 Minamo, School at Water's Edge
1 Remote Isle
1 Sand Silos
1 Soaring Seacliff
1 Alluring Siren
1 Aquitect's Will
1 Armored Cancrix
1 Avizoa
1 Bay Falcon
1 Breaking Wave
1 Calcite Snapper
1 Capsize
1 Chromeshell Crab
1 Coastal Piracy
1 Crab Umbra
1 Dandân
1 Deep Spawn
1 Disrupting Shoal
1 Dormant Gomazoa
1 Eel Umbra
1 Erosion
1 Excavation
1 Fishliver Oil
1 Flash Flood
1 Fylamarid
1 Giant Crab
1 Giant Octopus
1 Giant Oyster
1 Giant Shark
1 Gomazoa
1 Great Whale
1 Guard Gomazoa
1 Gulf Squid
1 Gush
1 Hammerhead Shark
1 Hedron Crab
1 High Seas
1 High Tide
1 Homarid
1 Homarid Shaman
1 Homarid Spawning Bed
1 Homarid Warrior
1 Horned Turtle
1 Horseshoe Crab
1 Hydroblast
1 Iceberg
1 Into the Roil
1 Island Fish Jasconius
1 Isleback Spawn
1 Jwari Scuttler
1 Killer Whale
1 King Crab
1 Kraken's Eye
1 Lingering Mirage
1 Living Tsunami
1 Lorthos, the Tidemaker
1 Man-o'-War
1 Manta Ray
1 Mysteries of the Deep
1 Narwhal
1 Part Water
1 Research the Deep
1 Rhystic Deluge
1 Sand Squid
1 Scent of Brine
1 School of Piranha
1 Sea Eagle
1 Sea Gate Oracle
1 Sea Troll
1 Sea's Claim
1 Siren's Call
1 Sky-Eel School
1 Slipstream Eel
1 Spreading Seas
1 Stinging Barrier
1 Sunken City
1 Sunken Field
1 Tidal Bore
1 Tidal Flats
1 Tidal Influence
1 Tidal Surge
1 Tidal Wave
1 Tideforce Elemental
1 Treasure Hunt
1 Turn the Tide
1 Viscerid Armor
1 Walking Sponge
1 Wall of Kelp
1 Wash Out
1 Water Servant
1 Waterspout Djinn
1 Windrider Eel
1 Wormfang Crab
Sideboard:
1 Flood
1 Giant Tortoise
1 Mikokoro, Center of the Sea
1 Rising Waters
1 Sea Kings' Blessing
1 Seafloor Debris
1 Shelldock Isle
1 Submerge
1 Tortoise Formation