Tony Wu / Humpback whale (Megaptera novaeangliae) adult female at rest. The tubercles on the whale's head are clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on t...

David Tipling / 2020VISION / Barnacle geese (Branta leucopsis) in flight, Solway Firth, Dumfries and Galloway, Scotland, UK, December

David Tipling / 2020VISION / Barnacle geese (Branta leucopsis) taking-off from grazing field, Solway Firth, Dumfries and Galloway, Scotland, UK, December

Markus Varesvuo / Four Barnacle Geese flying (Branta leucopsis) Finland

Markus Varesvuo / Flock of Barnacle Geese flying over water (Branta leucopsis) Finland

Andrew Parkinson / Barnacle geese (Branta leucopsis) flock flying in dense winter fog. Dumfries and Galloway, Scotland, UK, January (non-ex)

Floris van Breugel / Lines adorn the fractured sandstone rocks along the Barnacle (Cirripedia) and Sea snail inhabitated shores of Palos Verdes peninsula, California, USA

John Downer / Barnacle geese {Branta leucopsis} in flight, imprinted geese trained to fly beside car, captive, UK

Wild Wonders of Europe / Quinta / Limpets and Barnacles on rock, Alentejo, Natural Park of South West Alentejano and Costa Vicentina, Portugal, June 2009

John Downer / Barnacle geese in flight over water {Branta leucopsis} UK

John Cancalosi / Barnacle Geese {Branta leucopsis} standing on ice UK

Rick Price / Scaly Barnacle (Tetraclita squamosa) on rock. Bigge Island, Bonaparte Archipelago, The Kimberley, Western Australia.