Biologging

SECTION 1
　A small recording instrument,/which is called a data logger,/is attached to animals.// Carrying the logger,/the animals collect data/in the natural environment.// Biologging has developed/since the 1980s.// Japan now leads the world/in this new technology.//
　The data logger has realized the dream of studying the behavior of aquatic animals,/such as penguins or seals.// Before,/we couldn’t track them/once they dived into the sea.//