Four days after introduction, the Gulf marsh crab was observed actively grasping live seashore paspalum blades, pulling them apart, and consuming the finer strands. This confirms its herbivore role in the biome and represents the first direct evidence of grass regulation. On the same date the crab was also observed scavenging a detached fiddler crab leg, which was unexpected and suggests a broader opportunistic diet than its herbivore classification implies.
