Notes

This requires a summoning level of 68 to summon. The Bunyip is summoned from a bunyip pouch. The bunyip will not fight unless it is attacked first and can't be attacked unless its combat level is visible.

Use raw fish on the bunyip to convert them into water runes.
The bunyip's scroll: swallow whole, allows you to eat an uncooked fish, assuming you have the level to cook it.

Examine

Smells worse than he looks.