Oceanic art features human figures because they were probably based off of art from the ocean and from the inspiration of certain characteristics that come from the ocean.
Oceanic art featured more human figures then animal figures most likely because they believed that humans were special in some way in contrast to the animals around us so these cultures would display that belief by making art almost exclusively involving humans. Why? Well we as a species are the most intelligent and arguably successful species on the planet, our great intellect means that we have the capacity for abstract thoughts and for thousands of years we have known that we are the most intelligent species on the planet. So we come up with stories to try and explain why we are the most intelligent in comparison to every other species.
