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