Marine Debris

Marine Debris

  • Marco Faasse added an answer:
    Any information about the finding of Liocarcinus navigator rafting on plastic marine debris?

    Dear colleagues,

    one more interesting question regarding Liocarcinus navigator. Namely, this specimen was found floating among plastic marine debris jumping from one to another piece 42 Nm SW from city of Dubrovnik in the open south Adriatic Sea above the deep of 1226 m.

    In the literature can be found that this is most frequent on sandy substrate between 5 and 10 meters. Most probably it is accidental situation.

    I cant found data of their possibility to drift on floating debris. Do You probably have some knowledge of this interesting occurrence?

    best regards


    Marco Faasse

    Hi Pero,

    I doubt whether the information on L. navigator mainly occurring on sandy substrate is correct. I see it mainly on hard substrata. So I am not surprised to hear it's seen on an artificial hard substrate. However< I have not heard before of occurrences on floating marine debris. Certainly an interesting observation.

    Best wishes,

    Marco Faasse 

  • Nancy Treneman added an answer:
    Are there any morphological keys for pelagic Lepas of the Northern Pacific?

    I have been collecting Lepas spp. off of marine debris (woody and plastic) for a number of years, (Oregon & Washington, USA) and would like to start keying them out into species. Are there any keys for Lepas along the Eastern Pacific and Western Pacific coasts? I do have a key for 2 local species in Light's manual, but I wonder if there is a 'global' key, or more localized morphological keys/descriptions of Northern Pacific species (Western and Eastern).  Many of my specimens have degraded or absent soft tissue, so I am interested in morphological keys using the valves/plates.

    Nancy Treneman 

    Nancy Treneman

    Hello Mikhail....Yes....I saw about 29 species at the Worms site.

    Thanks! Nancy

  • Clare Cavers added an answer:
    Are there incidences of plastic cotton bud ingestion from marine debris, by marine fauna?

    I am investigating the role of plastic cotton buds in marine debris, as we have a high abundance being deposited on the coast in Scotland, and am interested in any cases of their ingestion by marine fauna, whether anecdotal or otherwise.

    Clare Cavers

    Clare Cavers

    Hi Matt, I haven't contacted any Australian researchers on this yet, thanks very much for the recommendation. Clare

  • Michael Delong added an answer:
    Does anyone kow if there is an alternative to formaldehyde/formalin fixative?

    I need for an alternative fixative for marine zoobenthos to preserve for long time (not only for few month) the samples.

    Our samples are marine sediment (sand/mud bottom), and we have to preserve these for one year approximately. 

    Thanks to all.

    Michael Delong

    Ethanol (70%) is best alternative to formalin.  Key for long-term storage is to have a good seal on containers and to check after a few months to determine if more ethanol needs to be added.  Problem I've found with freezing and thawing is it can create challenges in identification and there is the issue of having enough freezer space.

  • Ansar Khan added an answer:
    Is there any scientific journal reference on shipborne garbage?

    I am doing a research on marine debris stranded on coastal beach in relation to shipborne garbage.. The only reference i obtain is by Horsman, 1982.

    Ansar Khan

  • Asit KUMAR Guha added an answer:
    How can I calculate the Relative Exposure Index?

    Thanks in advance for your replies.

    Asit KUMAR Guha

    Sorry, I cannot comment on this point.

  • Bianca Unger added an answer:
    Actual amount of marine debris in the Pacific and Atlantic Ocean?
    I'm searching for a paper or report estimating the global amount of marine debris. I'd like to have some actual numbers. Does anyone have any ideas for literature I should take into account? Thanks for your help!
    Bianca Unger
    And no. 2
  • John Vonderlin added an answer:
    Any residual long term breakdown products from the plastic trash in the salt water of the ocean?
    Anthropogenic impact on ocean chemistry
    John Vonderlin
    Hi James,
    In my huge collection of marine debris I have about 50,000 benthic objects. Gathered over nearly a ten year period they have provided extensive forensic evidence about point sources, benthic movement and the taphonomy of submerged debris.
    I have a huge Flickr account detailing the contents and would be glad to engage in correspondence about what I know or think I know. Here's the link to what I've collected just this year, Enjoy. John Vonderlin
  • Giuseppe Suaria added an answer:
    How do we estimate the volume of the marine debris?
    Which tools are available to us, and what kind of sampling has been done and needs to be done?
    Giuseppe Suaria

    Dear Marianna, 
    Two very interesting paper just came out regarding estimates of the amount of plastic litter in the world seas (Cozar et al. 2014 and (Eriksen et al. 2014
    Plus, another article in science from Jambeck et al. 2015 just gave an estimate of the total input of plastic waste in the world's oceans (

  • Marianna Anderle de Sylor asked a question:
    Good overview paper, but old
  • Marianna Anderle de Sylor added an answer:
    What are some realistic solutions to cleaning up the debris?
    Several sites present lists of potential remedies, but most seem to assume that the plastic is not widely-distributed and that most of the debris is large. What I have read seems to suggest otherwise, that the debris can be found across a large distance and also deep wihtin the water column. Furthermore, it sounds like most of the plastic has been broken down into small particles.
    Marianna Anderle de Sylor
  • Marianna Anderle de Sylor asked a question:
    What is the resolution of current ocean/sea thermometers?
    Are Sea Surface Temperature (SST) and Upper Ocean Heat Content (UOHC) the most reliable or most commonly used measures? Which devices are used to measure water temperature of large bodies of water (satellites, Argo)?
  • Marianna Anderle de Sylor asked a question:
    What are the thermodynamics of photolytic and mechanical plastic degradation?
    Is the process exothermic for most plastic polymers? If so, might it be possible to observe a temperature change of water that varies by plastic density?

About Marine Debris

garbage patches in the Eastern Pacific, Western Pacific, and North Pacific or Subtropical Convergence Zone (STCZ)

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