also: まだらとびエイ
noun
spotted eagle ray
A species of eagle ray (Aetobatus narinari) with distinctive white spots on a dark back. Usually written in katakana.
マダラトビエイは熱帯の海で見られる。
The spotted eagle ray is found in tropical seas.
ダイビング中にマダラトビエイの群れに出会った。
I encountered a school of spotted eagle rays while diving.
トビエイ is the general term for eagle rays (family Myliobatidae), while マダラトビエイ specifically refers to the spotted eagle ray.
Compound of 斑 (まだら, 'spots') + 鳶 (とび, 'kite, eagle ray') + エイ (えい, 'ray'). The name describes a spotted eagle ray.