Need cool tshirts to gift to clients of a diving live aboard boat

This is what a business in Egypt was looking for in their t-shirt design

We are Deep Dark. A technical Diving Liveaboard boat based in the Red Sea, Egypt. We want to provide each client with a free tshirt when they arrive onboard for their trip. The tshirt should have a cool and gritty design so that guests would be proud to wear it when they get back home.
to get a general idea of our operation go to Facebook.com/deepdarksafari.
Here you will find our current logo and lots of boat pictures of the clients and trips. Can send more info - just ask.
We run mostly technical diving trips, which means going deeper, more equipment etc
What I want is to create a t-shirt based on a mix of dark and electric colours that show our logo and images of divers doing technical diving, Cave diving. The images should give the impression of adventure, risk, extreme sport. Importantly also is the idea that the boat is a luxury live aboard.
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