California’s Underwater Halloween Party

California’s Underwater Halloween Party

To celebrate Halloween and in honor of all things orange, I thought it might be fun to go through my archives in search of images of orange sea life found in California.  Of course, the top prize goes to last weeks post of the orange and black nudibranch that made it’s first appearance in California.  But surprisingly, there are quite a few creatures of the orange persuasion in the sea!

The Geribaldi is the California State Marine Fish.  It is found mostly in shallow coastal waters in Southern California.


The male fish builds a nest of red algae every year in the same place, attracting females to lay their eggs.  The female will check out several nests before she decides on one.  These fish protect their nests while they are brooding.   They are the largest of the damsel fish.  I have found that I can attract them to me by tapping two rocks together.  They are curious, and unafraid of divers.

Geribaldi protecting it's nest.

When a juvenile, the Geribaldi has bright electric blue spots.

Juvenile Geribaldi

The Spanish Shawl is a nudibranch that takes the cake when it comes to dressing for Halloween!  It’s orange mane and purple robe put it fully in the Halloween category, but those maroon colored rhinophores make it very eccentric.

Spanish Shawl

Sea Stars are a rarity nowadays along the California coast because of the devastating Sea Star Wasting Syndrome that has been wreaking havoc on our echinoderms.  I found this guy just last month, and was intrigued by it’s texture and color.  He is certainly a survivor as he is the only sea star I have seen for months.

Texture on the back of a Sea Star

This Skeleton Shrimp gets double Halloween points.  One for being a skeleton (well not really, but they look like they are), and one for being mostly orange.  These guys are tiny (only 5 to 8 mm long), and have so much character.

Skeleton Shrimp

Here is a Bluebanded Goby that is found all over the place in Catalina.  They are tiny and this one was hiding in a deserted tube worm’s hole.  When he poked his head out, he seemed to have his tiny teeth barred.

Bluebanded Goby

Last, but not least, and certainly not all of the orangey types, is a Simnia.  This is a kind of snail that pulls its foot up over it’s shell.  It is very hard to see while under water because it appears brown and is perfectly camouflaged with the sea fan it lives on.  But just add light, and WOW!


Waterdog Photography, Brook Peterson wishes you a happy and safe kickoff to the upcoming holidays!

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My photographs are taken with a Nikon  D810 in Sea and Sea Housing using two YS-D1 or YS-D2 Strobes.
All images and text are owned by Brook Peterson and may only be used with written permission.  Please do not copy or print them.  To discuss terms for using these images, please contact me.
© 2014-2018 Brook Peterson
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