RickL said:
Fifteen species of sea snake live on Australia's Great Barrier Reef, and Aipysurus laevis is commonly encountered by divers. This large snake is not usually aggressive, but since it is both very curious and venomous it is considered dangerous
One of my cleaning mates was fishing on the reef a few months ago and I bet he would disagree with the *usually* not aggressive part. They were fishing, and one of the olives swam past the boat and continued on its way....or so they thought. Being the curious creatures they are, this one decided to slither up the anchor rope and pay the boys a visit inside the boat

And he was less than friendly when they tried to 'help' him back into the water.
The joys of living in Australia, when just about every moving thing has enough teeth, power, size or venom to kill you several times over before you hit the ground 8)
Jim