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