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Description: Indicate a dangerous sea snake by combining the “danger” and “sea snake” phrases.
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Some signals are only used in certain circumstances.
For example, divers will make the universal one-handed "okay" signal when underwater and near their dive buddy, but will touch their head with a whole-arm signal when at the surface and/or at a distance.
Please describe the circumstance(s) in which this signal is used. "Underwater," "On the surface," "At a distance," "In the dark," and "Gloves on" are all good examples.
Signals often vary from region to region, especially for wildlife.
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