Great scallop Pecten maximus

Great scallops are a large bivalve mollusc, its shell have radiating ridges and the characteristic scallop wings by the hinge.

The two shells are actually different: one is curved like a bowl and the upper shell is flat like a lid.

They live in a self-dug hollow on sandy or gravelly seabed’s.

Behaviour

Scallops are predated on by starfish, but can actually swim out of harm’s way by rapidly opening and shutting their shells, sending out jets of water which propel them over short distances!

Scallops are filter feeders, filtering out plankton and other marine animals out of the water column.

Size

Up to 15 cm diameter.

Status

Common

Distribution

Rarer on the East Coast, but commonly found around Scotland’s Coastline.

When to see

All year round.

Facts

Common name

Great scallop

Species name

Pecten maximus

When to see in Scotland

All year round.

Where to see in Scotland

Sandy or gravelly seabed.

Snorkelling can be dangerous and is done entirely at your own risk.

Information is provided free of charge; it is your responsibility to check the conditions present on the day and assess whether it is safe to snorkel.

The Scottish Wildlife Trust strives to provide accurate information but cannot accept responsibility for changes, errors or omissions.

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