Tat, you mention a journey with wonderful scenery , but it is hard to picture this place because you don't mention where this trip is at. Wherever, it sounds beautiful but knowing what islands you're talking about might give the reader a better image in his/her mind. Also, the part about the cave is confusing. I can't tell if the cave is in the middle of the water, on the beach or under water. Maybe for revision reasons you could clarify this. Who is E, is he a friend or the teacher? Your detail is good.