These amazing Batfish appeared behind our boat as we parked in bays to snorkel. I had never heard of this type of fish before. They were very friendly and loved eating the potato chips we feed them. At one time I think there were 10 or more. I did jump in for a VERY short time and swim with them, but got a little afraid and got right back out. Tara managed to stay in the water with them a little longer. They were about 60cm in length, pretty big.