Purpuratus
Animalia
Echinoderms
Strongylocentrotus
Because a sea urchin's egg is relatively big
Because sea urchins have large numbers of relatively big eggs
Because the eggs make great omlettes
Because sea urchins have large numbers of eggs
Porcupine
Pentamerous
Dome
Toothpick
Both intertidal area and subtidal areas
Intertidal area only
On the beach
Subtidal area only
Feet
Nose
Mouth
Spine
Sea cucumbers
Algae
Small fish
Other sea urchins