It's called Cage of eden
basically it's about school having a trip, during thier flight the plane crashes in some kind of un mapped island which have exotic animals in it, i highly recommend this manga cause it's one of the unique mangas i believe.
basically it's about school having a trip, during thier flight the plane crashes in some kind of un mapped island which have exotic animals in it, i highly recommend this manga cause it's one of the unique mangas i believe.