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
Because sea urchins have large numbers of eggs
Purpuratus
Animalia
Echinoderms
Strongylocentrotus
Algae
Small fish
Sea cucumbers
Other sea urchins
Toothpick
Pentamerous
Dome
Porcupine
Both intertidal area and subtidal areas
On the beach
Intertidal area only
Subtidal area only
Nose
Feet
Spine
Mouth