>What's even cooler is that the iguana also only eats seaweed and algae, which means it does not need to kill other animals to survive. It still needs to kill

>What's even cooler is that the iguana also only eats seaweed and algae, which means it does not need to kill other animals to survive. It still needs to kill other organisms to eat. The only organisms that don't kill something else to gain energy are photosynthesizers and decomposers like fungi that consume dead organic matter.