Whale

Raw whale can be fished by very few members who have achieved 118+ Fishing and require level 119 Cooking to cook. Whales heal 200 to 2975 life points, depending on your Constitution level.

Whales can be found swimming around while a player has submerged into deep levels of water. The number of whales swimming around depends on the location. Any location where a whale is supposed to spawn, there is a 50% chance that a Walrus may spawn in its place. The whale can be caught by Spear fishing by using a Fishing spear. A process which involves automatically following the fish and stabbing it with the spear until it finally collapses and a raw whale appears in the player inventory. There is currently only one such spot for the whale to spawn, located in the water room in the Celestial Dungeon. To enter the room, players require a Fishing and Cooking level of 80. Catching whales give 1,000 Fishing experience and 590 Cooking experience when cooked.

Catching whales can take a really, really long time, so it is not advised to catch them if you are planning on leveling your Fishing, but when caught they can be sold for a huge price per whale and can be very helpful in dangerous areas.

Players can never stop burning whales no matter what Cooking level they have. By cooking whales, players gain about ~743,400 xp/hour, assuming they won't be burning any whales (which is highly unlikely).