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