For an explanation, see the main splats page
- The molluscs, the snails and their relatives make a natural group, based on their body plan and general anatomy and their mode of reproduction.
- Snails live in water and on land, and even in the most unlikely places, including a number of deserts. Some snails are very efficient at conserving water.
- Some snails eat plants, grinding tissue with a radula, while others are carnivorous. Tropical cone shells are dangerously venomous, hunting and catching prey.
- Normal shelled snails can be found with both right-handed (normal thread) and left-handed (reverse or gas thread) shells. Most species have just one form.
- Snails can be cultivated fairly easily, and are worth careful observation for their methods of eating and locomotion, as seen when they move across glass.
- Slugs are shell-less snails with a somewhat different body plan, but they also possess asymmetrical arrangements left over from when they had shells.
- Octopuses are highly intelligent, and can be trained to perform a variety of complex tricks. They will also solve problems involving travelling through mazes.
- Some octopuses lay out items on the sandy sea floor in a pattern that probably assist them in finding the way back to their shelter when danger threatens.
- Some octopuses, particularly the blue-ringed octopus, carry a powerful toxin that can kill humans. This is tetrodotoxin, which they probably get from microbes.
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