The Sei Whale is an Exotic catch in Fisch that only shows up once its hunt is running, and the hunt itself is tied to one thing: windy weather. That makes it one of the few whale-tier catches you can force on demand instead of waiting for a random server roll, as long as you are carrying the right totems.
Quick answer: Use a Windset Totem to switch the server to windy weather, which triggers the Sei Whale hunt. If nothing starts, use a Tempest Totem to change the weather first, then use the Windset Totem again.
What you need before starting the Sei Whale hunt
Stock up before you head out. The weather cycling is the part that eats totems, so bring more than you think you need — a single Windset Totem does not always land the hunt on the first use.
| What to bring | Why it matters |
|---|---|
| Windset Totem | Sets the weather to windy, which is what starts the Sei Whale hunt |
| Tempest Totem | Used to break a stuck weather state so the Windset Totem can fire again |
| Krill | The Sei Whale’s preferred bait |
| Master Rod or another high-luck rod | Handles the catch; a large progress bar makes the fight far more forgiving |
| A boat | The Sei Whale is an Ocean catch, so you need to be out on open water |
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If the hunt doesn’t start, cycle the weather with a Tempest Totem
This is the failure case almost everyone runs into. You use a Windset Totem, the weather goes windy, and no hunt appears. The fix is to break the weather state rather than spamming more Windset Totems into it.

Sei Whale catch conditions: bait, season, and time
Getting the hunt to start is only half of it. The Sei Whale has its own preferences stacked on top, and lining them up raises your odds noticeably. Windy weather is already handled by the totem, so the two you actually have to plan around are night and summer.
| Detail | Sei Whale |
|---|---|
| Rarity | Exotic |
| Location | Ocean |
| Preferred weather | Windy |
| Preferred cycle | Night |
| Preferred season | Summer |
| Preferred bait | Krill |
| Largest recorded | 12,280.53 kg |
All of that is listed in the Bestiary entry for the fish, so you can confirm the preferences in-game rather than trusting memory. It is worth checking before a run, since preferences are the cheapest luck boost available to you.

Rod setup for reeling in the Sei Whale
Bring the Master Rod if you have it. Failing that, any high-luck rod with a large progress bar works, and the size of that bar is the stat that matters most here — whale-class catches punish rods that give you a narrow window to work with.
Equip Krill before your first cast rather than after the hunt starts. Hunts are on a timer, and swapping bait mid-event costs you attempts you cannot get back once the whales are gone.
Note: A totem-forced hunt is not a guaranteed catch. The trigger is reliable, but the Sei Whale is still Exotic, so expect to spend several casts inside the event window before one hooks.
If you plan to farm this one, buy totems in bulk. The Tempest-then-Windset loop is cheap to execute but wasteful in volume, and the difference between a frustrating session and a productive one usually comes down to whether you can keep cycling long enough for the hunt to land while you are still out in the Ocean at night.






