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