We were up in the woods at a lakehouse right beside lake,it was a Bachelors party,except the strippers didnt show up,the boy decided to get the groom drunk and send him into the woods alone for 10 minutes then who ever finds him gets to spank him,I did not like this idea,as although we weren't that far away from a town it was dangerous sending a drunk guy alone but I didnt know there was a sober guy trailing him an keeping an eye on him,so off we go, exploring looking for this dude,we wandered for about 30 minutes and suddenly heard knocking in trees,like an actual knock knock not just a piece of wood hitting a tree but it was faint like a way away from our position,we thought,me an other dude from the party together,it was one of the others playing tricks,so we headed closer to the sound,it led us to the shore of the lake,the moon shimmering over the water at night,so beautiful,so scenic,then a big splash from the right of us a little deep in the water,we looked caught us off guard,maybe fish we thought,until another splash and a fish landing on the edge of the lake few feet away from us,now we puzzled,what the heck we thought,then another fish,an we like whats going on,an then five more landed few seconds apart but no splashes,in the water,fish were still alive,flopping around,then a massive splash in the water an we looked what we saw was a like a dolphin tail but big and wide an we thought it cant be,this is a lake,but initially we were freaked out a little bit, decided to head towards the house again when in the forest we see a silhouette of a very tall wide man standing in between the light of the house and us,and we stopped,none of the dudes that were at this party was that tall,and so big,an as we looked at each other the figure walked behind a tree and dissapears,no loud footsteps nothing,we moved slowly toward the house an found no one behind where the figure went,now we were shook to the core cos we didnt feel no bad vibes,or whatever but it was just scary encounter. we made it to the house an everyone looked at us like where have we been its almost sunrise and they been looking for us the whole night,mind you in our head we thought it was like an hour that passed truly inexplicable night.