What’s the difference between a nudibranch and a sea slug?

Until I read a gorgeous new book on nudibranchs by Tim Nicholson I didn’t think there was a difference. Not so. All nudibranchs are sea slugs but not all sea slugs are nudibranchs.

Sea slug is the common name for any marine gastropod without a visible shell (slug-like rather than the snail-like) including sea hares & nudibranchs. A nudibranch is 1 type of gastropod among many.

Book review is at https://news.scubatravel.co.uk/whats-the-difference-between-a-nudibranch-and-a-sea-slug.html

@SCUBATravel I miss diving so much.

@NightShade Why did you stop?

@SCUBATravel Did you ever hear of SeaLink? I used to work for them.

@NightShade I'm guessing not the ferries? I'm in UK

@SCUBATravel It was the late 90's and no one else did it, but we did. Well, until the dot com crash for a couple of years we hung on but... we sunk like an old boat. I continued to dive, though until the accident.

@NightShade That is early - you must have dived all over the world?

@SCUBATravel It was pretty surprising though, Club Med had some highly rated dive masters and destinations. They weren't as trendy in the 90's and were trying to make a come back anyway they could. I was really looking forward to touring their facilities and offerings.

@NightShade What did you do next when it folded - must have been hard losing a dream job

@SCUBATravel the surgeon I worked for was in women's healthcare (we didn't perform or do abortions). I figured I would go into a specialty practice for invitro fertilization since this was a huge issue for women and their partners. It was a good move, logical, and I was interested more in working in the lab vs patients.

@NightShade Quite a change!