not a nudibranch

  • scientist 1: so we found these cool new creatures at the bottom of the ocean what should we call them
  • scientist 2: idk man they look like techinicolor sausages with guy fiery hair
  • scientist 2: ...sea....cucumber
  • scientist 1: nah we gotta make it sound Scientific™
  • scientist 1: ...nudibranch
  • scientist 2: why tho
  • scientist 1: ᵗʰᵉʸ ⁿᵃᵏᵉʸ

The Alabaster Nudibranch can be found in the temperate waters of the Pacific, from Alaska to California and along the coasts of Russia and Japan. The beautiful, wispy white tipped cerata are actually the animal’s lungs. But don’t let it’s delicate form fool you, this nudi’s jaws are strong enough to crack open the shell of a snail, one of its preferred meals - photo taken at Seattle, Washington

The blue sea slug, or the blue glaucus, is full of surprises. It floats upside down, and its brilliant blue coloring is reserved for its underside, to confuse flying predators from above. It’s also a fierce predator in its own right: it preys on the highly poisonous Portuguese Man-O’-War hydrozoans. And not only is the blue sea slug immune to the Man-O’-War’s terrifying sting, but it actually stores its prey’s poison in the 80+ finger-like appendages on its body. When attacked by a predator, the blue slugs can re-use the Man-o-War’s poison in their own defense.

Photo: Greg Schechter


This friendly sea slug, called costasiella kuroshimae, is a very incredible species of ophistobranch! It is a sacoglass sea slug and is one of the few animals that can photosynthesize. I finally finished crocheting it and listed them on etsy! They make perfect gifts for scuba divers, marine biologists, and anyone who can appreciate the eccentricities of a green, photosynthetic sea creature! 

Available for adoption here. As always, crocheted with love. 

Valentine’s Day is coming up, but this is no ordinary rose – it’s a Hopkins’ rose! 

This bright pink sea slug can be spotted in the tidepools of Monterey Bay National Marine Sanctuary. When tidepooling in search of these little invertebrates, tread lightly! Tidepools are fragile habitats and it’s all too easy to crush their tiny inhabitants. 

(Photo: Steve Lonhart/NOAA)