What is past the dark sea tier 2 range

I only have 100 hours on my main and have only ventured to tier 2 of the dark sea, where i found 18k brigs and golden potion pots. what kind of stuff do you find deeper in the dark sea?

death
and hecate essence

sounds fun

epicenter

what do you have to do to get that title

most chests are golden and silver and the islands are extremely big, on top of the atlanteans being unsurvivable

it doesnt get that much different, I think sirens get more sirens per rock deeper in, islands can have hecate essessence and the epicenter is somewhere halfway between I5-I4. I think islands and chests increase to funky levels.

walk onto the epicentre island mass, which is at a random position in the i4 layer in every server