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