Tag Archives: Portuguese Men O’War

Signs of spring?

Dull, wet and mild has been the prevailing story for the winter weather so far this year in the south west of the UK.  Much needed winter sunshine has been in short supply and we’ve woken up to frost on only a handful of days. And then the storms:  in February alone, two consecutive weekends of severe weather brought heavy rain and gale force winds but very mild temperatures.   Local roads were blocked by water but flooding in other parts of the UK was much worse.

Even before the storms, walking in the rain-saturated countryside was particularly difficult but we managed to get out, although this sometimes meant paddling through mud and water.

Westcombe Beach

One of these walks was on a sunny February 1st when we took the opportunity to walk to Westcombe Beach near Kingston in south Devon.  This is an isolated sandy cove bisected by a sprightly stream and enclosed by some impressively jagged shiny grey rock formations.  The beach was largely clear of plastic waste, a rare find nowadays, but on one side I came across several unusual pale blue and pink inflated objects.  Although these might look as though they are made from plastic, they are in fact living creatures, Portuguese Men o’ War, driven on to the beach by south westerly winds.   They normally float on the surface of the sea, trailing dark blue tentacles with the capacity to deliver a very nasty sting, their pink sail catching the wind.

Portuguese Man o’War (some of the features of these organisms are lost when they are beached)

During our walk to and from Westcombe Beach we came across several flowers usually associated with the spring including primroses, violets and celandine.  As we were near the coast, the dark green fleshy leaves of Alexanders also flourished along the path sides but I was surprised to see one plant already in flower.

The flowers of Alexanders with a fly (probably a Yellow Dungfly)

Then as we walked back along the cliff tops in the low, late afternoon sunshine, we encountered a large caterpillar crossing the coast path.  It was very furry with orange-brown hairs along the top and darker grey-brown hairs below.  This is a larva of the fox moth and on sunny winter days they come out of hibernation to bask.

Fox moth caterpillar

Just under a week later, on February 6th, a day of sunny intervals, we walked to Mansands near Brixham.  Mansands is another isolated cove but with a stony beach and backed by a substantial body of water that attracts both waterfowl and bird watchers.  The land rises steeply either side of the beach with cliffs and there had been some falls of the soft rock on the eastern side over the winter which may have affected the solitary bees that nest there. [The picture at the head of this post shows the eastern side of Mansands beach and cliffs.]

Our biggest surprise of the day was finding a pair of toads (male and female) on the path along Mansands Lane as it descended towards the beach.  Hazel spotted the pair and had to take quick evasive action to avoid squashing them.  They were most likely on their way to the water below the path to spawn.  The males are opportunists and hitch a lift on the back of the larger females when they pass.  Once the female arrives at the water, more males will jump on her, competing for her attention.  Eventually, she will choose one male to fertilise her eggs as she deposits strings of them in the water.  We managed to persuade the pair to move to the path edge where they were more likely to avoid the danger of passing human feet.

Male and female toads

There were more surprises in store as we walked up the very steep Southdown Cliff away from Mansands where we saw several flowers often associated with spring.

Blackthorn flowers on Southdown Cliff above Mansands

 

Greater stitchwort on Southdown Cliff above Mansands

I hadn’t expected to see these flowers so early in the year but perhaps the generally warm weather has encouraged them.  There have also been reports of solitary bees emerging earlier than expected and I have seen queens of the bumblebee Bombus pratorum in two places in Devon, on January 15th and 20th so both very early.

Bombus pratorum queen (January 20th 2020)

A simple explanation for these findings is that our climate is changing.  Warmer, wetter winters with unstable weather are becoming more likely as a result of global temperature increases with corresponding effects on the flora and fauna.  But one person’s observations in one year don’t go beyond the anecdotal and we need much more comprehensive data to draw conclusions.

For this, I went to Nature’s Calendar, a citizen science project that records first flowerings, first sightings etc for many species across the UK.   When I looked at their report for 2019, I was surprised to see that blackthorn, to take one example, flowered 27 days earlier in the UK than it did in 2001.  In fact in 2019 all but one of Nature’s Calendar spring events were early, some considerably so.   Lorienne Whittle of Nature’s Calendar attributes these changes to the warmer winters we are now experiencing and the concern is that the long-established patterns of nature are being disturbed with potentially serious consequences.  For example, if frogs and toads spawn early, late frosts could kill their tadpoles.  Also, should insects emerge too soon they may not survive unless plentiful flowers are available for food.  We are entering uncertain times.

What a difference a storm makes.

Here I am again at Leas Foot Sands near Thurlestone on the South Devon coast, a week after my first visit.  Storm Ophelia passed noisily through the area between the two visits, bringing very high winds and rough seas and I wanted to see how the beach had fared.

Leas Foot Sands, back of beach after storm Ophelia 4
The sand dunes at the back of the beach with some debris

Mist accompanied me for most of the journey down but as I approached the coast, the gloom cleared and there was a hint of brightness in the sky.  To the west, the art deco hotel on Burgh Island glowed in a halo of white light and there was even a little milky sunshine at Thurlestone.  These luminous promises were destined to be unfulfilled as the sky quickly resumed its overcast state leaving the sea a uniform dull grey-blue.  At least it was calm; there was virtually no wind and the waves looked as though they couldn’t be bothered.  Perhaps because of the calm, there were birds about, on the beach and on the cliffs, wagtails, corvids and pipits.  Compared with my visit a week ago, the tide was much lower, exposing a larger area of beach with several concentric arcs of debris and a mass of dark seaweed at the water’s edge.

The beach at Leas Foot Sands is enclosed on either side by moderate red cliffs and backed by scrappy sand dunes that have suffered badly in previous years’ stormy weather.   Today these dunes resembled a piece of conceptual art dedicated to our throwaway culture.  All sorts of debris littered the rising sand:  many small fragments of plastic, wood and seaweed, feathers, plastic containers and many pieces of plastic wrapping. There was even a battered but colourful drink can that seemed to have come from the Far East.    It had obviously been fairly wild when the storm arrived, with high winds and waves reaching right up to the back of the beach; this area had been mostly clean a week ago.

Further down the beach, there were several arcs of debris presumably corresponding to the distance reached by different tides as the storm abated.  These strandlines contained small pieces of seaweed, cuttlefish shells, Portuguese Men O’War looking rather sad and deflated with some in pieces, cotton bud stems, colourful rope and fishing tackle.

One of the arcs of debris in the centre of the beach grabbed my attention.  It contained some of the same stuff but in lower amounts: a few feathers, small dry pieces of wood and seaweed and the occasional shard of plastic.  The big difference was the presence of nurdles, very easy to spot littered among the other debris here.  There must have been several hundred of the small, mostly grey, plastic particles spread across the beach in this arc.

Finally, near the water’s edge, there were substantial amounts of shiny dark brown seaweed partly submerged in the shallow water.  It looked as though this had been newly collected and dumped by the storm.  There was little or no plastic waste in this area.

So, what a difference a storm makes.  I wasn’t surprised to see all the litter at the back of the beach given the ferocity of the storm but the nurdles were a shock.  A week ago we had been hard pressed to find any nurdles at all whereas today they were plentiful.  The challenge now is to understand why the nurdles arrived and why they were apparently concentrated in one strandline.

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Our seas and our beaches are contaminated by nurdles, these small pieces of easily transportable plastic used as a raw material for making many of our plastic goods.  Nurdles pose many dangers but one obvious concern is that that they will be consumed by seabirds and by fish with dire consequences for their health.  Here is a link to more information about nurdles.

Leas Foot Sands, back of beach after storm Ophelia 2
Debris at the back of the beach superimposed on one of the clumps of sea rocket

 

Leas Foot Sands, back of beach after storm Ophelia 1
Debris at the back of the beach

 

Leas Foot Sands, back of beach after storm Ophelia 3
A drink can seen at the back of the beach – it that may have travelled far.

 

Leas Foot Sands, back of beach after storm Ophelia 5
Debris piled up at the back of the beach

 

Leas Foot Sands middle of beach after storm Ophelia 2
A mid beach shot with a sad-looking Portuguese Man’O War

 

Leas Foot Sands middle of beach after storm Ophelia 1
More unusual finds on a mid beach hunt

 

Nurdles on Leas Foot Sands after storm Ophelia 1
Nurdles on the middle of the beach along with natural debris. The nurdles are the small grey cylindrical pieces.

 

Nurdles on Leas Foot Sands after storm Ophelia 2
More nurdles in the middle of the beach.

 

Shoreline at Leas Foot Beach after storm Ophelia
Seaweed at the water’s edge.

 

Plastic waste and Portuguese Men O’War on a Devon beach

Last week, on a very windy day well before storm Ophelia arrived, we visited Leas Foot Sands, one of the small coves clustered around Thurlestone Bay in South Devon.  Thurlestone Rock, a stone arch or “thirled stone” is a prominent local landmark located in the Bay.  As well as being a popular attraction for canoeists and wild swimmers, the Rock gives the village of Thurlestone its name.

Leas Foot Sands
Leas Foot Sands

When we reached Leas Foot Sands, we stood and gazed across the water at the elemental scene.  A gusty, gale force wind blew from the sea, a powerful natural force affecting everything in its path. It had been hard enough to walk there, buffeted as we were from side to side and, now, above the beach and just about able to stand, we felt specks of sand flick across our faces.  The sea was a uniform grey under the overcast sky, but the wind created many white horses offshore and a sense of agitated movement.  Chunky waves continually attacked the curving apron of yellowish-brown sand, each one finishing in a foaming mass of white water that mingled with the wind giving the air a moist, salty essence.

At the southern side of the beach, the sand and rocks were coated with a slightly unsavoury looking, brownish foam.  I remember being alarmed, some years ago, when I first saw this spume on a beach in Cornwall and feared effects of detergents. I now know that it is a mostly natural phenomenon, caused by a high wind interacting with organic matter from marine phytoplankton.

A few hardy plants grew at the back of the beach beyond the strandline, bringing welcome colour on this mostly monochrome day.  Brash yellow and white daisy-like flowers of sea mayweed bobbed in the wind and pale lilac blooms of sea rocket kept safely close to the sand along with their fleshy green leaves.  A few pink lollipop flowers of thrift struggled on exposed cliff edges.

Further down the beach, bands of dark seaweed stretched in broad arcs parallel to the shore.   The thickest band of seaweed was the result of the morning’s high tide; here the seaweed sparkled, seawater dripping off dark fronds as the tide receded.  Mixed with the seaweed were various colourful examples of plastic waste, mostly bits and pieces of fishing tackle or rope, but I also saw an old plastic yoghurt container, a bright green plastic straw and several smaller shards of plastic.  A bright pink balloon-like object clung to a flat stone nestling among the damp seaweed.  I wondered if this was some kind of joke as it vaguely resembled an inflated condom but I abandoned that idea when, further along, I came across several similar objects.  Hazel put me right, telling me that these were Portuguese Men O’War, very colourful but dangerously stinging organisms that float on the sea surface trailing long tentacles, until driven in by high winds.  There have been reports of swarms of these colourful creatures on several beaches along the south coast and warnings that the number will increase with storm Ophelia.

Behind the wet strandline was a sparser band of dry, black seaweed, presumably resulting from sporadic higher tides.  I started looking around this sector digging up the sand with a garden trowel to see what I could find.  This was too much for a woman who had recently arrived on the beach with her child and friend.

“What are you looking for?” she asked me.

“I’m trying to find plastic nurdles, have you heard of them? “ I replied

“Do you mean those small bits of industrial plastic?”

“That’s right, but I can’t find any here” I continued.

“I suppose that’s good” she suggested.

I carried on looking but was unsuccessful.  Hazel, however, found six of the lentil-sized plastic pellets, a mixture of grey and blue, on the other side of the beach.  Earlier in the year, someone had reported collecting hundreds of plastic nurdles from this beach; perhaps we were unlucky or perhaps conditions had changed.

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Marine plastic pollution is one of the major environmental challenges of our time and something I want to return to in future posts.

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Sea Mayweed at Leas Foot Sands
Sea Mayweed

 

 

Sea Rocket at Leas Foot Sands
Sea Rocket

 

Plastic beach waste at Leas Foot Sands 1
Plastic waste

 

 

Plastic beach waste at Leas Foot Sands 2
Plastic fragments

 

 

Portuguese Man O'War on Leas Foot Sands
Portuguese Man O’War with fragments of dark blue tentacles

 

Plastic nurdles collected at Leas Foot Sands 11 10 17
nurdles