East Sea Dragon Palace is the 9th world in Plants vs. Zombies 2. It took place in the East Sea in an aquatic setting. This world was underwater and all land plants would die after a period of time unless an Oxygen Algae was planted.
The Plants that you can obtained in this world (My Take): Oxygen Algae: Day 1 Sea-shroom: Day 2 Lychee Drill: Day 4 Bubble Flower: Day 6 Electric Sea Pine: Day 15 Mine Fruit: Day 23 Sea Starfruit: Day 27 Sea Garlic: 20 Seed Packets Sea Anemone: 20 Seed Packets
