What do a carnivorous sponge, a lobular yam and a flat-faced psychedelic frogfish all have in common?

肉食性海绵、小叶山药和平脸的迷幻璧鱼，这三者有什么共同点么？

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What do a carnivorous sponge, a lobular yam and a flat-faced psychedelic frogfish all have in common?

肉食性海绵、小叶山药和平脸的迷幻璧鱼，这三者有什么共同点么？

youdao