Additional File 1.

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Red fluorescent invertebrates. Short MPG video clip showing examples of strongly fluorescent invertebrates and plants. Sequence 1a: Calcareous alga (Amphiroa) under normal viewing conditions (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 1b: Calcareous alga (Amphiroa) showing red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 2a: Unidentified alga under normal viewing conditions (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 2b: Unidentified alga showing strong red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 3a: Soft coral (or retracted anemone) under normal viewing conditions (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 3b: Soft coral (or retracted anemone) showing red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 4a: Stony coral (Mycedium) under normal viewing conditions (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 4b: Stony coral (Mycedium) showing red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 5a: Stony coral (unknown) under normal viewing conditions (field at ca. 16 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 5b: Stony coral (unknown) showing red fluorescence (field at ca. 16 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 6: Anemone Entacmaea quadricolor showing red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 7a: Polychaete worm (Sabellastarte indica) under normal viewing conditions (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, no filter). Sequence 7b: Polychaete worm (Sabellastarte indica) showing red fluorescence (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed). Sequence 8: Red reef fluorescence as it appears when viewing the reef through a red mask. Most fluorescent structures are either stony corals or algae (field at ca. 18 m depth, using Sony HD HDR-CX6EK, natural daytime illumination, red filter, not post-processed).

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Michiels et al. BMC Ecology 2008 8:16   doi:10.1186/1472-6785-8-16