Sealioning is the tactic that is hardest to name while it is happening to you, because every individual message in it looks entirely reasonable. [1]
Where the word comes from
Unusually for internet vocabulary, this one has a precise origin. [2] The strip was published on 19 September 2014. [3]
The comic is worth understanding because it encodes the whole tactic. The sea lion never insults anyone. It never raises its voice — and says so. [4] It simply will not leave, and it frames every refusal to continue as a failure of manners on the other person's part.
That inversion is the mechanism. The behaviour is not the rudeness; the behaviour is the relentlessness, wrapped in a manner that makes objecting to it look like the rude act.
What it looks like
- A request for sources, which is answered, followed by a request for better sources, then for a different kind of source
- Persistent presence across a thread, or across days, long after everyone else has moved on
- Framing your fatigue as evasion: are you unable to defend your statement, or simply unwilling?
- Scrupulous politeness maintained precisely while ignoring every signal that the conversation is over
- An audience: the questions are frequently for onlookers rather than for you
The honest difficulty
This is the tactic most likely to be misidentified, in both directions.
Plenty of people ask repeated questions because they are genuinely confused, or because they are new to a subject, or because the first answer really was unclear. Calling that sealioning is a way of avoiding a conversation you simply do not want to have — and if the accusation is public, it is a way of discrediting someone for asking.
The distinguishing feature is not any single message. It is what happens after you answer: a sincere questioner updates, concedes, or specifies what would change their mind. Sealioning treats each answer as the start of the next question, and no answer ever counts.
That means the honest test is retrospective. You usually cannot tell from message one. You can tell reliably by message six.
What to do
Disengaging works here, and works better than most places, because the tactic depends entirely on your continued participation. But it costs something: it looks, to onlookers, like withdrawal.
Two things help:
Answer once, properly, then stop. A single clear answer in the thread serves the audience, which is the part that actually matters. Repeating it serves only the person asking.
Say you are stopping, once. "I've answered this; I'm not going to keep re-answering it" is a complete response, and it reads very differently to onlookers than silence does.
What does not help is arguing about whether it is sealioning. That converts the subject into a dispute about your characterisation of them, which is a much easier argument for them to have.