Subject: Franticly hovering and dancing in the current, these Anthias form giant aggregations that feed on zooplankton. The huge shoals are composed of many small groups known as harems led by a single dominant male. All Anthias are born as females that will, when all factors are right, turn into males in a later stage of their lives. This form of sex change is called sequential hermaphroditism.
Technique: When filming wide-angle scenes it is important to fill a big area of the image with blue. The screen was therefor horizontally divided into approximately 2/3 of water and 1/3 of reef. This ratio often works best for underwater wide-angle scenes.
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