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