NPCs composing that spawngroup :

a_siren_beguiler (25%)

a_siren_myrmidon (25%)

a_siren_myrmidon (25%)

a_siren_templar (25%)

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

sirens_19, range=98 (46,-47,5)

sirens_27, range=91 (36,-1,-80)

a_siren_myrmidon (50%)
a_siren_myrmidon (50%)

sirens_35, range=98 (33,-81,-135)

sirens_36, range=85 (34,-26,-135)

sirens_37, range=85 (24,11,-135)

sirens_44, range=71 (-63,-100,3)

sirens_47, range=86 (19,20,-20)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_70, range=48 (-54,-78,-133)

sirens_74, range=34 (-27,-54,-157)

a_neriad_mistress (100%)

sirens_129, range=84 (-34,53,-125)

sirens_130, range=62 (-43,32,-117)

a_siren_myrmidon (50%)
a_siren_templar (50%)

sirens_131, range=37 (-54,7,-110)

a_siren_beguiler (50%)
a_siren_templar (50%)

sirens_132, range=19 (-64,-16,-104)

sirens_133, range=35 (-57,-65,-100)

sirens_134, range=18 (-63,-44,-100)

sirens_135, range=61 (-63,-90,-104)

sirens_136, range=91 (-58,-121,-110)

sirens_112963, range=83 (29,-54,-135)

#Faleniel_of_Darkwater (100%)

sirens_231256, range=49 (-19,8,-13)

a_servant_swordfish (100%)

sirens_231264, range=98 (46,-46,5)

an_enthralled_bulthar (15%)
a_servant_sea_elephant (85%)

sirens_231274, range=1 (-50,-29,-133)

a_watery_servant (100%)

sirens_231277, range=85 (34,-25,-135)

sirens_231279, range=47 (-53,-77,-133)

#shimmering_sea_spirit (10%)
an_icy_servant (90%)