Question

of the organisms represented, which would have the smallest total biomass? 28/61 shark squid algae small fishes

Explanation:

In a food chain, energy (and biomass) decreases as we move up trophic levels. Producers (like algae) have the most biomass, and top predators (like sharks) have the least because energy is lost at each level (e.g., through respiration, waste). The organisms here are algae (producer), small fishes (primary/secondary consumer), squid (higher consumer), shark (top predator). So the shark, being the top predator, has the smallest total biomass.

Answer:

shark