I don't know if this is technically a rock pool, not being the sea. But at Greenwich when the tide is very low the furthest shoreline surface is actually solid rock and concrete. It looks like mucky mud, I've always hestitated to walk out to it in my usual boots but ventured out for the photo today and was surprised it was solid!

So the pools of water sit until waves splash back up, but the water is quite calm today.

Just another day in my usual Greenwich spot. The tide is moving out and you can catch odd lighter lines in the moving water showing the movement outwards. I've always liked this effect but don't know how or why it happens. I'm guessing it's actually surface bubbles or debris being dragged by the direction of the waves.

By Greenwich pier in the evening, after some shopping! It was dark but the high tide meant I could photograph pretty close to the water surface over the railing. I let the auto-flash have a try and liked the reflection of flash off the ripples of water.

Another guest spot by the river at Blackfriars (Gabriel's Wharf to be exact, I was working in Skylark Gallery today).

A bit blah day, we did have patches of sun but not when I took my photo. Tide was out somewhat so had water lapping at the sand and debris.

Haven't seen it in at least a week and today the sky is blue and the sun is out! So despite getting some nice photos of footprints in the sand (the river banks are sand by Blackfriars Bridge and it's low tide right now) I just had to go with something blue and cheerful.

Fairly calm day but as I'm in central London for this photo there's a tiny bit of choppiness from boat traffic.

Thought I'd show you a bit of that river wall I keep mentioning. This is actually just a bit of it on the side of the steps I sometimes am photographing from. Still high tide so not much wall visible, but I love the telltale algae build-up.

A calm slightly hazy day, so calm water just lapping at the sides.

Sorry this was a bit late. I was up late last night getting my podcast done (StudioWaves, listen here!) and updated this to Flickr but forgot about the blog. Oops!

15/12/08: Another night shot - forget to go in daylight! Colour is completely arficial - result of the auto-levels in Photoshop. No other editing - it amazes me the data that is actually in the photo despite it looking completely black straight from the camera. (Light reflected is from the O2 Dome.)

Looking down along the river wall the high tide was moving along the wall and between pillars of piers. I wanted to capture the way the water was moving two directions due to posts under the water surface, and the black 'hole' near the center is the start of a little whirlpool. The water is then moving away from that area in both directions, producing the two wave lines.

I missed the rain, shame, but it's a very high tide today (full moon) with heavy rolling waves. Nothing major but you can just feel the weight of the water in them. So here's a splash against the river wall.

Got out to the river around dusk and only with extreme Photoshop adjustments did I get anything other than a black square.

My first night photo, inspired by Katherine Tyrrell of Making a Mark blog who pointed out basically that I had no excuse for missing a photo - I could do night shots.

This is the reflections of lights from one of the cruise boats that commutes back and forth between Greenwich Pier and the Dome.

Yikes was it freezing out this morning! I decided to get straight out of bed and go do my photo this morning. A windy cold day, so there were nice flowing waves on the surface. Sunny and bright, but the colour actually changed immediately from blue to green grey as cloud blew over.

I just couldn't resist bringing in the image to the shore a bit today. I managed to go out to the river at the lowest tide time and there was just all that lovely stretch of mud and stones. A very low tide, but not a spring tide (moon is about 3/4). ('Spring tide' is a tide with the greatest difference between low and high water levels in a cycle, nothing to do with the season.)