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The seahorse is a minor character in The Backyardigans.
The seahorse can be seen in the background of Sea Deep in Adventure. Unlike most characters appearing in the performance, it is not a costumed actor; rather, the seahorse is a stationary prop.
The seahorse is red-orange with yellow stripes. It has a long snout and one eye on each side of its head.
The seahorse has not appeared in any episodes of The Backyardigans, but is shown in the live performance Sea Deep in Adventure.