sea slug - Sea cucumbers are also sometimes referred to as sea slugs, although they are in fact echinoderms.
Seahorse (or sea pony?) from The life aquatic with Steve Zissou. I would like to have one.
リュウグウノツカイの稚魚 - 海人の深深たる海底に向いてー深海の不思議ー
Cyerce Sea Slug share moments
✯ Sea slugs rock! ✯
Nudibranch Sea Slug