Lake Hamana in Hamamatsu, Shizuoka Prefecture used to be lake of freshwater and seawater with abundant inhabitants. However, over the years, sea lettuce known as “aosa” have been multiplying in huge amounts reaching to an extent that they are...
Lake Hamana in Hamamatsu, Shizuoka Prefecture used to be lake of freshwater and seawater with abundant inhabitants. However, over the years, sea lettuce known as “aosa” have been multiplying in huge amounts reaching to an extent that they are...