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