Invasive SpeciesDead man's fingers

Codium fragile
FOUND by dfitzpatrick
Cape Elizabeth, ME
ID Confirmed
Quality checked by manyeyes
Peer reviewed by
Field Notes
We took a break from work and went out to Kettle Cove in Cape Elizabeth, ME to look for some exciting species.
Supporting Evidence
Photo of my evidence.
It has a dichotomous growth pattern with a round Thallus cross-section
It is dark green - a similar color to cooked spinach
It is about pencil thick and it feels like a sponge.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Codium fragile
Common name:
Dead man's fingers
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.561222 °
W -70.218735 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
Kettle Cove
Trip date: 
Mon, 2012-07-30 14:30
Town or city: 
Cape Elizabeth, ME
Type of investigation: 
Species Survey
Time of low tide: 
Mon, 2012-07-30 02:54


The codium was anchored in a tide pool before I picked it out for identification. It seemed as though it was growing there. It was a very low tide and I saw a few bunches of codium growing in various tide pools. Let me know if you have any other questions.

Thanks for that clarification, dfitzpatrick, though I have to say I'm a bit dismayed by your news. This will be an interesting site to watch over the next few months/ years.

I have the same question as vitalsleuth - was the fragment you found a floating fragment or a growing, anchored specimen? It makes a huge difference in understanding the importance of your find!

From your point on the map, and the vibrant green color of this piece of codium, can we assume that you found it growing in a tide pool, and not washed up on the beach? I'm particularly curious because reports to date have been of only dead (dark green to brown) washed up codium near Kettle Cove and Crescent Beach. It'd be great to hear it straight from you that it was alive in the pool before you picked it out to photograph.

Thanks so much for looking for codium and contributing such an important find.