Silly Rabbit tricks are for kids. The ocean surface temperature changes according to several variables, one contributing factor is the climate temperature at the surface which the oceans absorbs. In years where there are hotter temperatures (regardless if one wants to attribute those hotter surface climates to global warming or not) these scientist wouldn't expect to see such large Sargassum blooms as the (upper portion) water temperatures are a hindrance to their growth....SO scientist went looking for an answer as to why in years when surface water temperatures are not favorable or should not be favorable to boom blooms then why are they happening, once again, in parenthesis: and even human activities [that can lead to Sargassum blooms], is the hypothesis they're assuming until further research.

**as a side note, it is the bottom layer of the ocean whose temperatures stay consistent and that scientist (NASA) has concluded has shown no warming trend that would be consistent with any global warming effect.

**another side note: don't argue with someone who lives surrounded by great lakes. Surface climate warms water, the hotter it gets outside the more the surface waters of the lakes warm up. The surface waters of the ocean are the same way. So yes this enabled scientist to view the data over the years as to what the surface water temperatures were to determine that warm water was not a hindrance in this growth pattern. You can argue all day long why some years the surface temperatures were hotter and why but the point being, as far as this discussion goes, is that they can be, this is what set the little alarm bell off in the scientist heads that something just wasn't right here....as in "we're experiencing something that isn't normal"...why?

Okay Ralph lets put this in layman's terms: Normal bloom growth happens when conditions are right. Sometime after 2011 these blooms started growing enormous regardless if the conditions were right so scientist went looking for answers because even in the years were the "surface" temperature of the water was warmer they wouldn't expect these "boom" blooms, let alone normal blooms to be normal. Remember when the conditions are not right blooms do not produce to the same extent as in years when conditions are right. These scientist wanted to know why these "boom" blooms were "bucking" everything they knew about bloom formation. After looking at all the data available to them they're hypothesis is these "boom" blooms are caused by an increase in nutrients released into the waters via deforestation and fertilization. The conclusion is that if deforestation and over fertilization continue so will these boom blooms.