Let's Make A Collage — Round 138

This is my entry to the LMAC contest for all creative mind. Kindly follow the link to make a submission.

Here is my collage of undersea structures. It was made combining different images — given below, with that provided by @shaka being the building block.

Here are the images I used in making the collage:

Contributed to LIL by @redheadpei

Source

Source

Provided by @shaka

Source

Source