-upper eulittoral zone- Around the spring high-tide mark, bordering on the spray or splash zone, characterised by small
winkles.
-middle eulittoral zone- Approximately between neap low- and
high-tide marks, characterised by barnacles, limpets and larger
winkles, amongst many other invertebrates and algae.
-lower eulittoral zone- Around the spring low-tide mark, has more
algae and wave-resistant animals such as limpets and mussels, as well as soft-bodied animals in calmer water.
