Secret Rising from the Deep

When you find a key at the bottom of the ocean, where is the door?

Ok this is the THIRD time I've tried to submit this tonight in the past hour.....uggg.

For the May challenge at Beginner Level


~~~~~Stock Credit~~~~~~

Chain~[link] Chain by ~Sacreds-Stock


Water Drop Texture~[link] Water Drop by ~dazzle-textures


Water Splash~[link] Waves Splashing by ~LadyLysandra


Dolphin~[link] Dolphin Stock 2 by ~GloomWriter


Key(required)~[link] key 4 by ~2bgr8STOCK


Mermaid Tail~[link] Mermaid Tail Stock VI by ~Linzee777


Girl~[link] Annie Blue 2 by *SophStock


Background~[link] Background-evening sea by ~AzurylipfesStock


Door(required)~[link] Secret Door 2 by ~tia-stock

Thank you everyone for the wonderful use of your photos!

As always, critique and pointers welcome.