Underwater Base: Create a glass dome structure submerged in the ocean, featuring coral gardens, sea lanterns for lighting, and an airlock entrance.

Marine Research Facility: Design a multi-level building on the shore with laboratories, observation decks, and a dock for boats. Use blue concrete and sea-themed decorations.

Shipwreck Village: Construct a series of small huts built from shipwrecked boats and driftwood, surrounded by palm trees and sandy beaches.

Aquatic Farm: Build a floating farm with crops planted on platforms above water, connected by wooden walkways. Include fishing areas and a small dock.

Lighthouse: Design a tall lighthouse on a cliff overlooking the sea, with a spiral staircase, beacon at the top, and a surrounding rocky shoreline.

Mermaid Cove: Create a hidden cove with colorful coral reefs, underwater tunnels, and a mermaid statue as a centerpiece.

Ocean Observatory: Build a tall tower with glass walls for panoramic views of the ocean, equipped with telescopes and research stations.

Pirate Ship: Construct a large pirate ship with sails, cannons, and a treasure chest on board, anchored in a secluded bay.

Beach Resort: Design a luxurious beach resort with cabanas, a swimming pool, and water sports facilities, all surrounded by palm trees and sandy beaches.

Submarine: Create a large, detailed submarine that can be docked at the shore, featuring control rooms, living quarters, and observation windows.