While this may not be news to anyone on the waterways around the southern USA and Caribbean, this image shows just how much commercial traffic is sailing around the ocean.
This image is from a 2017 data set. The article was originally posted back in February 2018 on Marine Traffic Blog by Katerina Ignatio.
AIS and computers can be combined to produce overlays on the massive amount of traffic that moves around the oceans. So, keep one hand for your boat, one hand for yourself and both eyes peeled for that cargo ship moving down the main shipping lanes!