A seraph wearing armor, especially full plate armor ought to sink like a rock. You're slow in armor, but you want to run from a bear or something... so you decided to swim out into a lake? That's a drowning waiting to occur.
#How many people can swim with 60 lbs of steel strapped to them?
finite hamlet
wet garnet
Copper armor should be heavier than steel though
stone quarry
Answer to your subject question - Seraphs are not human so they can 🙂
But I agree, armor types should give you some effect.
Plate armor could drastically reduce you ability to swim.
Crude armor (wood) could make you swim better.
...
unique jewel
add some ways to stay underwater longer and you have sorta realistic early diving gear!
rapid jungle
lol why meteoric plate armour the only one which has the helmet vizor? 😂
unique jewel
also in the vein of giving armor some downsides so it's not just a freebie: helmets could possibly obscure vision, though obviously this could just make the game unfun
rapid jungle
also in the vein of giving armor some downsides so it's not just a freebie: helm...
this would not affect the player vision
just for look
🤷♂️
cause helmet with vizor looks sus
stone sparrow
Copper armor should be heavier than steel though
And bronze should be better than Iron but people would probably never use iron in the game if that was the case
wet garnet
this would not affect the player vision
Would be interesting to see armors affecting vision
Resulting in variation in armor choice
rapid jungle
Would be interesting to see armors affecting vision
Resulting in variation in ar...
🤷♂️
severe ocean
I like this idea. It would make moats perfect for one of their original purposes again; cannot cross bodies of water into a castle when you are covered in armor. For PVP this would make more intriguing situations between two ‘factions’ or ‘guilds.’
calm saddle
Actually wouldn't affect your ability to float as much as you thing, soggy clothes do impair movement though
lavish cloak
https://www.youtube.com/watch?v=qzTwBQniLSc
Your Hollywood preconceptions of how armor works are wrong.
unique jewel
https://www.youtube.com/watch?v=qzTwBQniLSc
Your Hollywood preconceptions of how...
you still can't swim easily in heavy armor of any kind, really
scarlet bough
you still can't swim easily in heavy armor of any kind, really
From what I can tell you can but the question becomes with how much stamina https://youtu.be/TLcT5J7yg9k?si=Q-HTQoTMleHNBme9
You or I getting in water with armour yeah we would drown. We don’t wear such things or work as hard or do daily PT. But trained warriors are different
calm saddle
A heavy backpack would absolutely cause you to drown though
scarlet bough
Having a stack of any blocks would make you sink 
Maybe except for logs (they float)
calm saddle
Stacks of logs offset some of the weight of other blocks