Figure 5
From: Revealing the global longline fleet with satellite radar
Half of the longline activity can be imaged by sampling only a small fraction of the ocean. Spatially (a) and temporarily (Fig. S7), longline activity is highly concentrated. Dividing the world into a four-by-four degree grid by 52 weeks for the calendar year 2020, half of the longline activity is in just 10% of the total cells where longline activity occurs (b). To image 50% of the longline activity, one would need 3820 scenes, distributed appropriately in space (a) and time (Fig. S7). Map generated using Python 3.9.6 and PySeas library (https://github.com/GlobalFishingWatch/pyseas).
