Nick Upton / Common prawns (Palaemon serratus) and a Rock goby (Gobius paganellus) feeding on a dead Montagu's crab (Xantho hydrophilus) in a rockpool, Cornwall, England, UK, September.

Nick Upton / Rock goby (Gobius paganellus) stealing food from a scavenging Common prawn (Palaemon serratus) in a rockpool, Cornwall, England, UK, September.

Constantinos Petrinos / Peacock-tail anemone shrimp (Periclimenes brevicarpalis) living commensally with the Branching Sea Anemone (Actinodendron glomeratum). Lembeh Strait, North Sulawesi, Indonesia.

Christophe Courteau / Common prawn {Palaemon serratus} amongst seaweed Brittany France

Alex Mustard / 2020VISION / Pink shrimp (Pandalus montagui), Loch Carron, Ross and Cromarty, Scotland, UK, April

Alex Mustard / 2020VISION / Skeleton shrimp (Caprella linearis) living within the polyps of Dead man's fingers soft coral. Bard Cave, Bressay, Shetland Islands, Scotland, UK, June

Jeff Rotman / Emperor Shrimp (Periclimenes imperator / Zenopontonia rex) living inside gills of Spanish Dancer Nudibranch (Hexabranchus sanguineus). Egypt, Red Sea.

Kim Taylor / Common prawn {Palaemon / Leander serratus} newly hatched larva.

David Fleetham / Miner's urchin shrimp (Gnathophylloides mineri) camouflaged on a Collector urchin (Pseudoboletia indiana) Hawaii.

Franco Banfi / Emperor shrimp (Periclemenes imperator) on Sea cucumber (Thelenota ananas), Tubbataha Natural Park, UNESCO Natural World Heritage Site, Sulu Sea, Cagayancillo, Palawan, Philippines. April.

Nick Upton / Spiny starfish (Marthasterias glacialis) squeezing into a crevice in a rockpool as a Common prawn (Palaemon serratus) swims past, Cornwall, England, UK, September.

Nick Upton / Common prawns (Palaemon serratus) scavenging on a damaged Flat top shell (Gibbula umbilicalis) in a rockpool, Cornwall, England, UK, September.