ES1HE08 Marine Biology


One or two paragraphs should be included introducing the UK’s rocky shore. You also need to mention which areas the different species of alga listed below can be found on rocky shores.

You don’t need to explain why certain species are more dominant. Give a brief description of each species along with the location/zone where they are found.

List of Algae species:

Fucus serratus

Fucus Vesiculosus

Fucus spiralis

Pelvetia Canaliculata

Corallina officinallis


There are many rocky shores in the U.K. that consist of either vertical rocks or rocky terrain.

The intertidal zone, which is made up of solid rocks, is biologically rich for various types of habitat.

This area is home to only hard-adapted animals and plants that can survive in harsh environments.

Ascophyllum nomosum – Ascophyllum nomosum is a large brown seawood which dominates the rocky beaches.

This algae has long straps that look similar to fronds and contain egg-shaped bladders.

These fronds can grow to 0.5- 2 cm long and are small in size.

This species is slow growing and can live to be several decades old.

This algae can be found near the shores of Scotland and Ireland.

Fucus Serratus – Fuccus seratus is an alga that is robust and has a olive brown colour. Also known as serrated wrack, or toothed Wrack, it is also called fucus serratus.

It has a disc-shaped, long base.

This alga has a frond that is flat about 2 cm across and a bifurcated length of up to 1 m.

It is found primarily along the Atlantic coast from Portugal to Svalbard, as well as on the shores and islands of North America and the Canary Islands.

Fucus vesiculosus: Mostly found in the Western Baltic Sea, North Sea and Pacific oceans, bladder wrack is also known.

It is most commonly found along the British Isles’ shores.

It can also be found along the Atlantic shores in Europe, Greenland and Northern Russia.

Fucus spiralis has been mostly found along the Atlantic coasts in North America and Europe.

It is about 30 cm long and irregularly dichomous. The discoid-shaped base allows it to attach itself to the rock.

Pelvetia canaliculata – this is a common alga, found on the rocky shores across Europe.

It can be found in Europe’s Atlantic shores from Spain to Iceland. This includes France and Ireland as well as Norway, Portugal, Spain and the Netherlands.

It can withstand extreme conditions and requires exposure to the air. If it is submerged for more than 6 hours, it will begin to decay.

Corallina Officinallis – It is a type of red seaweed found primarily on the coasts of the mid-littoral, and lower zones of rocky shores.

It is generally found at the rims and in the vicinity of pools created by the tide.

These algae are found all along the north Atlantic coast of North America, from Morocco and Norway to Greenland.

Filamentous green alga – this is the type of algae found on rocks or debris.

It is made up of fine, light green filaments that are densely arranged into mats.

It can be grown in any water source, including a stream, lake, or pond.

“Colonization processes, the role of coralline alga in rocky shore community dynamics.

Journal of Sea Research 95 (2015), 132-138.

“Vertical zonation” is the dominant distribution pattern of littoral communities on rocky shores at a local scale.

Estuarine Coastal and Shelf Science, 147 (2014):113-122.

“Network structure above food webs: mapping non-trophic, trophic interactions on Chilean shores”

Thibaut and Thierry

“An ecosystem-based assessment of the status Mediterranean algae-dominated shallow, rocky reefs.”

Marine Pollution Bulletin 17.1 (2017): 311-329.