Barnacle
Barnacles are shellfish that cling to rocks or ships hulls.
Sea creatures that attach themselves to rocks include shellfish such as limpets, mussels, oysters, barnacles.
Barnacle
they use rocks and sticks for hammers
rocks and sticks
Possibly spears, rocks, and sticks
They suck clams and shellfish from the rocks in shallow waters. They also each fish.
you use sticks and rocks
Probably building tools out of rocks and sticks.
they use rocks and sticks for hammers
Could be shellfish, fish, lobsters, rocks (moved by waves)
they got two sticks and put it in a circle of rocks then robbed them together then as they did that another person would find two more rocks and slam it against the sticks