How do I get the sunken treasure?
They still appear if you’re too fast, but only briefly – right at the first transition to the defence phase (when Tequatl’s at 75% health). They tend to spawn a little way away from Tequatl’s feet, so I found the best way was to try and get into melee range when the phase change is close. I got it by positioning myself a little to the left of Tequatl’s right foot, and a vortex appeared just outside melee range near there.
I’ve seen them on and off. They are usually fairly close to him. They look like the regular AOE areas but you’ll see 3 of those bone fingers come out of the ground and move around in it. Maybe get into mellee range but mostly look for them instead of attacking.
ANet may give it to you.
What Stitch and Just a flesh wound said, in addition the npc will shout something along the lines of, Watch out fingers or tendrils are pulling people under. I don’t remember exactly what the npc will say but there is a comment about pulling people under that will let you know to watch for it.
Found it, thanks
(edited by trixantea.1230)