This is an image of waste and rubbish in the ocean. And the pattern that the rubbish is in is supposed to be the way the fish swim.
It is very colourful as to depict the wonders of the ocean.
The text in the poster , "The greatest wonder of the sea is that it's still alive." brings the audience to the consequence of pollution.
Typographical Features: The words are written in bold and all in capital letters to stress the importance of not littering.
Layout: Most of the image is filled with the picture of the ocean filled with litter and only small part of the image is filled with words, thus the reader will see the picture first.