The strandlines of Tiree vary, with huge kelp strandlines on high energy cobble beaches and smaller strandlines on sandy beaches.
Below are photographs of the different strandlines and what can be found amongst them:
|Strandline of kelp.|
|Strandline of fucoid seaweed and shells.|
|Feeding marks of birds, often many sand hoppers and flies, |
which birds eat, can be found beneath the strandline.
|Razor shell (Ensis ensis)|
|Green shore crab (Carcinus maenas) with encrusting barnacles on its carapace.|
|Bryozoa colonise the crabs legs.|
|Barnacles and encrusting red seaweeds colonise the crabs carapace.|
|Red seaweeds grows on the crabs mouth parts.|