Originally posted by: Barumonk
SEED is activated through various different mindsets of the user. Determination is the one used by both Shinn and Athrun in this episode (as well as the one Kira uses regularly). Its also why Athrun wasn't able to use this SEED earlier in the series, as his thoughts were mostly just wandering about during most of the series. The only other one I can remember at the moment is the Protective/Defensive SEED, which appears as the 'seed' falling down, bouncing off the water and then bursting into a nova. Most people call this one the berserker seed though, since its usually more intense that the Determination type.
Hmm i didnt know that. thanks for telling me. the only weird thing about that is that shin didnt use his berzerker seed when he stabbed athurn in the gouf, and he was like the most crazy hes ever been. must been an uber determination seed or sumthing.