I think your nephew was the guide right? You can hear his voice several times including him saying to me: “you wanna take a seat?” because I was hanging off the edge of boat by one knee on the railing taking this video 
There’s no zoom on this, they were so close! It was mating season and these were males actually fighting over a female. Can’t see it here but there was pink foam on the water from the blood.
Another mom and her baby basically hid next to our boat to stay out of the fray. Baby was arms length from us.
Sooo cool. And then we snorkeled at Molokini. Best day ever.