A research team from the Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology has developed an explainable AI method to observe the splashing drops of different liquids while impacting a solid surface. This achievement provides important insights into the phenomenon of splash, which is important for various applications, such as aeronautics, biology, chemical and mechanical engineering, materials, acoustics, and combustion.

Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them? 

Previously, small animals often had to be euthanized to obtain precise information, but now scientists have found a new way to humanely study detailed dental characteristics of vertebrates. This customizable method can be used for both living animals and museum specimens and has been published in the Journal of Morphology. 

Researchers at the Okinawa Institute of Science and Technology (OIST) and their collaborators applied human dental impression techniques to study fish teeth in a species called Polypterus senegalus. This fish has been separated from other fish species for about 360 million years. Due to this long period of evolutionary isolation, Polypterus still has many primitive characteristics that provide important information on the early development of bony fish.