Orca can be obtained at level 95 Fishing.
This fish can be acquired by casting a fishing rod into bodies of water that indicate an 
Bass to fish at this fishing spot. Upon being caught, it gives you 29,500 exp in the Fishing skill.
Location
You can obtain Orca by Fishing at the Docks south of Brightleaf Forest, and inside Mushroom Island.
Recipe
| Skill level | Item | Materials | XP | Merchant Price |
|---|---|---|---|---|
| 95 Cooking |  Cooked Orca |
1x Orca 1x Black Salt |
22,500 | 2,700 |