any of various shell-less marine gastropod molluscs, esp those of the order Nudibranchia
nudibranch
sea slug in American English
nudibranch
sea slug in American English
noun
a nudibranch
Word origin
[1770–80]This word is first recorded in the period 1770–80. Other words that entered Englishat around the same time include: charade, embed, lotto, red flag, taboo
Examples of 'sea slug' in a sentence
sea slug
This is a sea slug 2cm long, and it is only the third time that one has been found in this country.
Times, Sunday Times (2009)
The sea slug your soul.
The Times Literary Supplement (2014)
The creatures include cold-water worms, sea cucumbers and sea slugs and snail-like pteropods.
The Sun (2009)
Just like with the sea slugs, it grew back over a long and worrying period of time.
The Sun (2013)
This makes for a mix of utterly weird sea creatures, and here we meet them, from transparent, brainless shrimps to enormous sea slugs.
Times, Sunday Times (2012)
The researchers taught sea slugs to associate the touch of the probe with a burst of electric shocks over roughly ten seconds.
Times, Sunday Times (2018)
They looked surprisingly like many natural phenomena such as lettuce leaves, sea slugs, kelp and coral.
Times, Sunday Times (2008)
Creatures such as fish, hard corals, sharks and sea slugs were ignored because their presence was well documented already.