tangle of the titans?

Sat here just after lunch listening to the rain on the greenhouse which houses the webcam back home. 

Good snrokel this morning, the ocean was calm and no wind about so the water was super clear. 

 Just missed getting the whole of the tuna in this shot as i was just chasing the shark at the time.  I thought they might have a go at each other but they just swam by. 

Here are some tunahaving a go at a shoal of fish that have crowded into a ball as a defense mechanism

 We were only saying at breakfast that we hadn't seen any Moray eels so far.  You normally just see their heads poking out of holes in the coral.  So it was unusual to see this fella toodling along out in the open, i got a good video, he was about 5ft long and a good 8 to 10" thick