Geoduck of all shapes and sizes are abundant at Discovery Park during the lowest of tides (typically anything below -2). Look for their siphons protruding from the sands closer to the water's edge. Often times all you will see of the geoduck is a little tuft of vegetable matter upon the sand. However, you may encounter geoduck in various stages of extension. If you don't startle them, you may catch them sticking up a good few inches from the sand. Show some respect for these creatures that can live up to 160 years! You may touch but be gentle.

Aggregating anemones are absolutely everywhere at Discovery Park. Colonies appear in the sand and on rocks. It is almost impossible not to step on them but try your best not to! Larger painted anemones may also be found but are far less frequent. These are typically in rock crevices or dangling from rocks. 

You will find the majority of ochre stars in the rocky cluster between the North Beach and the lighthouse. Most of the ochre stars at Discovery Park are a rich purple. Look for them in between the rocks.

There is an abundance of red sea cucumber in the rocky cluster between the lighthouse and the North Beach. Sometimes you'll just see their tentacles but there are plenty of whole organisms on display. Look for them in every nook and cranny.

While jellyfish are not tide pool animals per se they may often be encountered during a low tide walk. Frequently they are dead, victims of the rapidly descending water. Be wary as they are still quite capable of a nasty sting. The two species I have encountered at Discovery Park are the lion's mane jellyfish and an aequorea victoria jellyfish. Even though I didn't touch any visible parts of the lion's mane it still managed to give a nasty sting.

As with most beaches in Puget Sound, chiton are abundant. Look for these mollusks on any rocky surface. They are often camouflaged with seaweed and barnacles.

Mottled stars are less common than ochre stars at Discovery Park. Unlike ochre stars, these will often be found laying in the sand. Typically they have more slender arms than ochre stars and a smaller central disk.

Timing is everything if you want to see a Lewis' moon snail. They don't tend to spend much time on the surface. You may only see part of them protruding from the sand, either a bit of shell or part of their mantle. They are not especially common to find at Discovery Park, but there is ample evidence that a sizable population inhabits this area.