Big bones
500-1000 coins
47 Water runes, 40 Air runes, 3 Blood runes, 4 Nature runes, 3 Soul runes, 3 Death runes
5 Runite bolts, 10 Rune darts, Water battlestaff
Herb seeds (1)
1 Gold charm, 1 Crimson charm, 1 Green charm, 1 Blue charm
Amulet of ranging (somewhat rare unique drop), Clue scroll (level 3), Snape grass (3 noted), Raw lobster, Raw swordfish, Raw shark, Seaweed (3-4 noted), Grimy herbs
Fremennik Slayer Dungeon
"It has a light on its forehead. What a pretty light... So shiny!"
You need Slayer level 78 to kill this monster. It can be given as a task by Sumona (gives 120-185) or Duradel (gives 130-200). It uses a magic attack style.
It is not possible to use a cannon to fight it.