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