Dipper at the Keil Burn

Looking from the bridge on the main road, spotted this dipper flitting about the rocks in the Keil Burn. It settled on a small rock, close to the pipe that goes across the burn. I have seen them here before but never close enough to get a photo.

The white throat and bobbing motion make it instantly recognisable.

Creels and Sea Squirts

 Creels piled up on the pier at Lower Largo.

Many of the creels have sea squirts attached and many are also encrusted with tiny mussels.

Sea Squirts also known as ascidians, are a marine class of animals that fall between the invertebrates and the vertebrates. They are simple animals that are often categorised with the invertebrates, however in their larval stage they do possess primitive vertebrate characteristics.
                 

Although, as here, they may form clusters these particular sea squirts live as individual animals. They feed by siphoning nutrients from sea water. There are two short tubes or siphon openings which allow a flow of water through the body. Water is drawn through the inhalant siphon, and then expelled via the exhalent siphon. As the water circulates through the body; food and oxygen are removed from it and waste products are expelled.

If they are disturbed, they will force the water they contain out of both siphons at the same time which is how they get their name of sea squirt.

A photo taken in a previous year of a creel covered in sea squirts and brittle stars.
Brittle stars or ophiuroids are echinoderms in the class Ophiuroidea closely related to starfish. They differ from starfish in that they have an obvious circular central disc from which arise the five thin, very flexible arms which break easily, hence the name. They often occur in large number under stones lying on gravel and rough sand between large rocks.They crawl across the sea floor using their flexible arms for locomotion. Because the ophiuroids have longer, more slender arms than starfish, they are also known as serpent stars; the class name Ophiuroidea is derived from the Greek meaning "serpent".

October Red Admirals

This has been a very poor year for butterflies, but with the milder weather this week there have been quite a lot of red admirals about.

 Red admirals seem particularly fond of the valerian flowers in my garden.