NPCs composing that spawngroup :

#a_massive_manatee (17%)

a_massive_walrus (17%)

a_servant_manatee (16%)

a_servant_manatee (17%)

a_walrus_servant (16%)

a_walrus_servant (17%)

NPCs spawning around that spawngroup :
(Max range : 100)

sirens_24, range=87 (74,20,3)

sirens_25, range=74 (77,33,3)

an_enthralled_molkor (100%)

sirens_46, range=75 (63,170,2)

sirens_118, range=99 (199,103,2)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

sirens_123, range=76 (100,28,-54)

a_siren_beguiler (50%)
a_siren_myrmidon (50%)

sirens_124, range=96 (143,18,-54)

sirens_125, range=95 (44,27,-54)

sirens_127, range=87 (45,36,-80)

a_servant_swordfish_190209, range=96 (53,20,-16)

a_swordfish (100%)

sirens_231256, range=96 (53,20,-16)

a_servant_swordfish (100%)

sirens_231263, range=87 (74,20,3)

sirens_231277, range=87 (45,36,-80)