Thank you for pointing me towards the right direction, so I found the following link:
Precise, gentle and efficient - The cleanup system has been specially designed and tailored for this purpose. It is four meters deep and designed as a funnel with an opening at the bottom to ensure that fish and other marine life are not trapped when trawling for marine plastic.
This article does use more specific language than "southern hemisphere", so not too sure what you mean. It also includes several links for further reading in relation to this topic.