The Uki (moon) is said to be associated with coolness, peace, and joy and to be more important than even Owẹn (the sun). The behaviour and nature of the moon were and are studied by the Iwoki, the guild of astrologists and meteorologists established by Ọba Ẹsigie (c. 1504–50).

The Uki is usually depicted in crescent or half-moon form and appears on some of the Ama-Ẹrọnmwọn (bronze relief plaques), sometimes on its own as a corner motif and at other times as part of compositions with figures identified as being part of the Iwoki. Crescent forms of the moon are also used as part of the motifs decorating textiles and clothing worn by figures.

Ehẹn is a general term used to describe various types of fish.Ọbazee 2025, p. 90 Although mudfish are one of the most common motifs in Benin art, other kinds of fish are also represented. According to Blackmun, a greater variety of fish are represented on the Aken'ni Elao (carved tusks) than on other types of royal artefacts. According to Kathy Curnow, fish appear on 70 Ama-Ẹrọnmwọn (bronze relief plaques), making them the most commonly represented animal. Despite their prevalence, the precise species of fish are not easy to identify due to their “generic renderings”, possibly indicating that artists did not always distinguish between specific varieties. Fish are represented on the Ama-Ẹrọnmwọn both in profile and from above.

Ebe Amẹ refers to a wide variety of plants, particularly the leaves of the water fern or river leaf, found in riverine areas of southern Nigeria. Artists from the Igun-Ẹrọnmwọn used these as a decorative motif in the background of most Ama-Ẹrọnmwọn (bronze relief plaques). The petals of the Ebe Amẹ, like the points of the ἀghàdàgháda (crossroads), represent the four cardinal directions: north, east, south, and west. The number four plays a foundational role in the Edo calendar, which is structured around four market days.

In the riverine area surrounding Benin City, there are two types of crocodile. The Ẹghughu, known in English as the dwarf or bush crocodile, is believed to be more docile. Ọbazee 2025, p. 133 The second type is the Àgbákà, the aggressive Nile crocodile. Ọbazee 2025, p. 11

Crocodiles are one of the important animals represented in the historical Emwin Arhe, and they are known as Olokun’s guards or the “policemen” of the waters. The powerful and ferocious qualities of these animals might explain why warrior figures are often depicted wearing Uhunmwu-Ẹkuẹ (pendant masks) in the shape of crocodile heads on Ama-Ẹrọnmwọn (bronze relief plaques). Olokun devotees use crocodiles as sacrificial animals in offerings during the worship of Olokun.