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