Poisonous and scary
Don't worry, the only way this one will harm you is if you eat his liver. A quite harmless puffer, unlike the fish below.
A very brave dive master below with a stone fish, note the spikes down its back. A spike from this fish can lead to a quick painful death.
Stone fish below lying under sand, easy to rest on by mistake.
Moray eel below, fairly harmless unless you get too close.
