what is the meaning of from here？
"Now when we get to our findings I thought we could divide them up into the different zones we identified on the shore and the problems organisms face in each zone. So for the highest area....."

"The splash zone?"

"Yeah, we found mostly those tiny shellfish that have strong hard shells that act as protection."

" But not FROM other organisms that might eat them, predators?"

it seems a from which isn't the from of 'i'm from England". am i correct? what does it mean if i'm correct?

Question

what is the meaning of from here？
"Now when we get to our findings I thought we could divide them up into the different zones we identified on the shore and the problems organisms face in each zone. So for the highest area....."

"The splash zone?"

"Yeah, we found mostly those tiny shellfish that have strong hard shells that act as protection."

" But not FROM other organisms that might eat them, predators?"

it seems a from which isn't the from of 'i'm from England".  am i correct? what does it mean if i'm correct?

Answer

Speaker 1: "Yeah, we found mostly those tiny shellfish that have strong hard shells that act as protection."

Speaker 2: " But not FROM other organisms that might eat them, predators?"

Speaker 2 is finishing the thought for Speaker one.  The complete sentence is implied.  "Yeah, we found mostly those tiny shellfish that have strong hard shells that act as protection, but not from other organisms that might eat them, like predators."

In other words, the strong hard shells protect them, but they're not strong enough to protect them from predators.