The sea butterfly looks like a transparent, gelatinous snail, with slimy wings sprouting from the opening of its shell.

海蝴蝶看起来像是一种透明凝胶状蜗牛，从外壳的开口处长出黏滑的翅膀。

The so-called sea butterfly has two wing-like appendages, where most snails have a single foot. The BBC's Johnason Webb now reports.

这种名为海蝴蝶的海螺有两个像翅膀一样的附属肢体，而大多数的海螺只有单足。BBC记者乔纳森·韦伯报道。

This here is a theropod, it's called a sea butterfly.

这是一只兽脚亚目动物， 叫做海蝴蝶。

Predictions for sea carbonate and pH conditions in 2100 showed that animals like the sea butterfly or pteropod, would lose their shell within 45 days.

根据对 2100 年海中二氧化碳浓度与 pH 值的预测，像海天使或翼足目这样的动物，将在 45 天内失去牠们的壳。