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