Guild Wars 2

I am having trouble getting into Togatl Grounds. I understand the entrance is from an underwater cave from Eukaryn Caves. But I can’t find the entrance.

Go to Ireko Tradecamp waypoint. Swim northeast to where the heart NPC (the hylek who turns you into a pig) is. Once you’re at the heart NPC at the mouth of the cave, look inside the cave and to your left. There should be a water area where you can swim down and through a tunnel to the POI.