Ayrmer Cove, 5 July 2020

Purpose: This was an exploratory trip to a new beach for us, Ayrmer Cove, near Challaborough. Dad knew the area but had never been here before. I was excited to find new things and put my new camera skills into practice.

Route and location: Ayrmer Cove near Ringmore (in the South Hams). There is a National Trust car park with a good path straight down to the beach.

Click on the markers for details

Ayrmer Cove turns up trumps

As it turned out, we discovered 10 species for my iRecord account – a great tally, especially as this included a my first ever Hairy Crab, and a strange spider crab. We have submitted it as a Great Spider Crab (Hyas araneus) but this is yet to be confirmed as there are several closely related species that are hard to distinguish. At least now we know what to look out for.

Tide times

TimeMetres
Low tide00:340.9
High tide06:415.1
Low tide12:580.8
High tide19:005.3

Source: UK Tides app, for River Yealm entrance

Common prawn

Palaemon serratus

common prawn

We see many prawns when rock-pooling. We do not normally bother taking a photo but did so today for my iRecords.

Cushion star

Asterina Gibbosa

cushion starfish

This was the first species we found. Later on, we found another one under a rock.

Great Spider Crab

Hyas araneus (Unconfirmed)

spider crab
spider crab mouth

Dad found this spider crab in a large rock-pool, just about spotting it while it was moving across a sandy patch. These are very hard to spot as they cover themselves up in seaweed though I did find another 3 of these later on in the day.

Common Brittlestar

Ophiothrix fragilis

common brittle star

Dad turned over a rock and a few brittle stars were under it. Brittle stars are alien like and weird to hold.

Ballan Wrasse

Labrus bergylta

baby ballan wrasse

I found a small ballan wrasse in a rock-pool swimming near the surface so I dipped my net in and caught it. When we go fishing we often catch larger ones – up to about 4 pounds. My uncle apparently caught one over 7 pounds.

Montagu’s Crab

Xantho hydrophilus

furrowed crab in berry

Dad found a montagu crab with eggs. Biologists usually say that the crab is ‘in-berry’ when like this.

Hairy Crab

Pilumnus hirtellus

hairy crab

This was the first hairy crab we have ever found. It is quite easy to see where it gets its name.

Brown crab

Cancer pagurus

edible crab

Velvet swimming crab

Necora puber

velvet swimming crab

This photo shows just why these get the nickname ‘Devil crabs’.

Broad-clawed Porcelain Crab

Porcellana platycheles

broad-clawed porcelain crab

Not the clearest photo, but sufficient for identification.

Note: there are only 3 walking legs for this species so they are not ‘True crabs’. The missing pair exist but are too small to be noticed.

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