Recording Debris Items

I found an item that could become a large item (> 30 cm) if it became unraveled/unwound. How should I record it?

Items should be recorded according to how they’re found at the time of the survey. For example, if a circular strap or band is found enclosed and is < 30 cm in all dimensions it should be recorded as a regular-sized item, but if it is opened/detached and is longer than 30 cm, it should be recorded as a large item.

I found an item of debris smaller than 2.5 cm in the longest dimension. Why can’t I record it on the data sheet?

Smaller (meso- and micro-size) debris is hazardous to marine life and in some instances may be more abundant than larger debris. However, the 2.5 cm size cutoff (about the size of a bottle cap) is used as a standard metric because it is the smallest size that can reliably and consistently be detected with the human eye. Having this size standard increases the reliability of the data being collected, providing a more accurate picture and more robust results. Feel free to record comments or counts of small debris in the “notes” section of the datasheet.

Should I record an item as a “fragment” of a given material type, or under the “other” category?

A fragment is a piece of a larger item that can no longer be identified, or that represents less than 50% the size of the original item. An “other” item would be something that is identifiable but not listed on the datasheet, for example a metal car part. It’s helpful to comment in the notes section of the datasheet on what types of “other” items are found at your survey site.

I found a piece of natural driftwood. Should I record this on the survey sheet?

No. Natural woody debris does not fall under the official definition of marine debris. Only processed or treated lumber should be recorded. Wood that has been cut into beams or planks and/or treated should be recorded as lumber/building material. Burnt firewood is not considered marine debris unless it is clearly processed lumber.

Why does the datasheet have Balloons listed under both Plastic and Rubber items?

Balloons can be made of either rubber or plastic. Plastic (Mylar) balloons have a seam and are made of a metal (foil) coated plastic such as polyethylene or nylon. They usually have a shiny, reflective surface and often times have designs with pictures and/or words. Latex balloons are the traditional ‘party’ balloons. They are also often used at festivals, open houses, sales, mass balloon releases, etc. These balloons are made of natural or synthetic latex, are usually round or oval in shape, and can come in a variety of colors.

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