Makes oshan tendrils make fissures instead of chasms, adds a fish tendril to ocean

code/game/objects/structures/lavaland/necropolis_tendril.dm

@@ -18,6 +18,7 @@
 	var/gps = null
 	var/obj/effect/light_emitter/tendril/emitted_light
 
+	var/deconstruct_override = FALSE // Monkestation addition: override for ocean tendrils
 
 /obj/structure/spawner/lavaland/goliath
 	mob_types = list(/mob/living/basic/mining/goliath)
@@ -40,6 +41,10 @@ GLOBAL_LIST_INIT(tendrils, list())
 	GLOB.tendrils += src
 
 /obj/structure/spawner/lavaland/deconstruct(disassembled)
+	// Monkestation addition start: override for ocean tendrils
+	if(deconstruct_override)
+		return ..()
+	// Monkestation addition end
 	new /obj/effect/collapse(loc)
 	return ..()
 

monkestation/code/modules/liquids/ocean_generator.dm

@@ -98,9 +98,10 @@
 		/mob/living/basic/mining/lobstrosity/lava = 20,
 		/mob/living/simple_animal/hostile/asteroid/brimdemon = 20,
 		/mob/living/basic/mining/goldgrub = 10,
-		/obj/structure/spawner/lavaland = 2,
-		/obj/structure/spawner/lavaland/goliath = 3,
-		/obj/structure/spawner/lavaland/legion = 3,
+		/obj/structure/spawner/lavaland/ocean = 2,
+		/obj/structure/spawner/lavaland/ocean/goliath = 3,
+		/obj/structure/spawner/lavaland/ocean/legion = 3,
+		/obj/structure/spawner/lavaland/ocean/fish = 1, // a rare fish challenger approaches!
 	)
 
 	flora_spawn_list = null

monkestation/code/modules/ocean_content/fluff/ocean_tendril.dm

@@ -0,0 +1,45 @@
+//Oceanic Tendrils, which spawn lavaland monsters and DONT break into a chasm when killed (chasms cause puddles, so we cant have dat)
+/obj/structure/spawner/lavaland/ocean
+	name = "oceanic tendril"
+	desc = "A vile tendril of corruption, originating deep under the sea. Terrible monsters are pouring out of it."
+
+	deconstruct_override = TRUE
+
+/obj/structure/spawner/lavaland/ocean/deconstruct(disassembled)
+	new /obj/effect/collapse/ocean(loc)
+	return ..()
+
+
+/obj/effect/collapse/ocean
+	name = "collapsing oceanic tendril"
+	desc = "Get your loot and get clear, else you will be sleeping with the fishes!"
+
+	// a var used in terraformation, i could just type the turf into it but that would look ugly due to its lenght
+	var/transformation_turf = /turf/open/floor/plating/ocean/dark/rock/warm/fissure
+
+/obj/effect/collapse/ocean/collapse()
+	for(var/mob/M in range(7,src))
+		shake_camera(M, 15, 1)
+	playsound(get_turf(src),'sound/effects/explosionfar.ogg', 200, TRUE)
+	visible_message(span_boldannounce("The tendril falls inward, the ground around it filling with magma!"))
+	for(var/turf/T in RANGE_TURFS(2,src))
+		if(!T.density)
+			T.TerraformTurf(transformation_turf, transformation_turf, flags = CHANGETURF_INHERIT_AIR)
+	qdel(src)
+
+
+/obj/structure/spawner/lavaland/ocean/goliath
+	mob_types = list(/mob/living/basic/mining/goliath)
+
+/obj/structure/spawner/lavaland/ocean/legion
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/hivelord/legion/tendril)
+
+/obj/structure/spawner/lavaland/ocean/fish
+	max_mobs = 6
+	mob_types = list(
+		/mob/living/basic/aquatic/fish/cod,
+		/mob/living/basic/aquatic/fish/gupper,
+	)
+
+/obj/structure/spawner/lavaland/ocean/icewatcher
+	mob_types = list(/mob/living/basic/mining/watcher/icewing)

tgstation.dme

@@ -5967,6 +5967,7 @@
 #include "monkestation\code\modules\ocean_content\fluff\industrial_power_cables.dm"
 #include "monkestation\code\modules\ocean_content\fluff\launching.dm"
 #include "monkestation\code\modules\ocean_content\fluff\ocean_elevators.dm"
+#include "monkestation\code\modules\ocean_content\fluff\ocean_tendril.dm"
 #include "monkestation\code\modules\ocean_content\fluff\trench_ladder.dm"
 #include "monkestation\code\modules\ocean_content\hotspot\center.dm"
 #include "monkestation\code\modules\ocean_content\hotspot\hotspot.dm"