Matty Smith is an extremely talented photographer that travels the world taking these amazing half submerged camera shots at various locations around the globe. And as you can see, the result of his obvious patience in finding the perfect angle for these photos to come out as they do is absolutely stunning.
You can check out more of his work below:
Or for more info, please visit his website at mattysmithphoto.com.

I had discovered from previous visits to dive this small bay that after strong summer northeast winds hundreds of bluebottle cnidarian are blown in and trapped, they float around the bay on the tides and sometimes clump together in huge rafts. I began planning this shot because knew that the blueness of these animals lights up wonderfully with a strobe and figured the sun would rise somewhere in the background towards the mouth of the bay. I thought that orange and the blue would make a striking shot. It took quite a few early mornings and lots of lighting experiments to make this image, but in the end I’m very happy with it.

Physalia physalis (bluebottle) taken as an over/under image in Bushrangers Bay, NSW Australia. After strong NE winds hundreds of these zooids were blown into the bays around Shellharbour and trapped overnight. Post processing is limited to colour temp and small amounts of burning. Also slightly cropped.
Source: The Mind Unleashed