Researchers from the University of Bayreuth, Germany discovered how two hermit crab species co-exist on the same beach without fighting over limited resources like food or shelter.

Sebastian Steibl and Prof Dr. Christian Laforsch sought to investigate how resource partitioning occurs and whether it may be a driver of coexistence between competing species. (Resource partitioning involves similar species in the same environment utilising different subsets of the same resource (or using it in a different way), so they are not in direct competition with one another.)

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Scientists at Pennsylvania State University and the University of California, Santa Barbara have discovered that when fishermen selectively catch large and medium-sized parrotfish at coral reefs facing decline due to climate change, algae has a better chance of growing and overtaking the corals.

Nonetheless, according to the research, the reef’s biomass is maintained. This is because even with less of the large and medium-sized parrotfish, there would be many smaller parrotfish that would take their place.