#UnderwaterMacro hashtag - Bluesky

@kahhow.bsky.social

6 months ago

I still can’t believe this is called a “sexy shrimp”

Thor amboinensis is a tiny shrimp (this one is <1.5 cm) living in symbiosis with sea anemones. Generally a good roommate but when food runs low, it snacks on anemone’s protective mucus.

Nature’s surprise #sexyshrimp

#macroshot #underwatermacro

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Martin Stevens

@wildlifevision.bsky.social

6 months ago

Two tiny #seaslugs from Anilao in the Philippines: Favorinus tsuruganus, which feeds on the eggs of other sea slugs, and a Shaun the sheep nudibranch. Amazing how tiny these creatures are, barely visible to a naked eye.
#marinelife #nudibranchs #underwatermacro #underwaterphotographer #marinebiology

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Gregory Rothman

@gregoryrothman.bsky.social

9 months ago

Catalina Gobie (Lythrypnus dalli) This is a close-up underwater photograph of a Catalina goby, a tiny, vibrantly colored reef fish. The goby faces the camera with a slightly upward tilt, showcasing its brilliant orange-red body adorned with glowing neon blue stripes that trace down from its eyes and along its face. The background is warmly blurred in reddish tones, emphasizing the fish’s radiant colors. In the foreground, pieces of seaweed or encrusting marine life create a natural frame The Catalina goby are native to the eastern Pacific Ocean, particularly around California’s Channel Islands and Baja California. It is a member of the Gobiidae family and is commonly found inhabiting rocky reefs at moderate depths. Known for its bold coloration—bright red-orange with iridescent blue markings—this species often lives in crevices or among seaweeds. Catalina gobies are protogynous hermaphrodites, meaning individuals can change from female to male. They play an important role in reef ecosystems and are also popular in marine aquaria due to their striking appearance. • Protogyny is common in many reef fish species and involves sex change from female to male. • In Lythrypnus dalli, this transition typically occurs when there is a need for a dominant male to take over a territory or mating role. • Interestingly, in controlled environments, some individuals have also been observed to reverse the sex change — from male back to female — under certain social conditions. So they are bidirectional sex changers, though protogyny is the dominant pattern.

In their range, a fairly common fish. Always stunning. They all hatch female. Read more info by tapping photo.

#CatalinaGoby
#MacroMonday #LythrypnusDalli #UnderwaterMacro #MarineBiodiversity #BlueSkyMacroMonday #GobiesOfThePacific
#UWPhotography
#Photography
#ProtogynousHermaphrodites

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Gregory Rothman

@gregoryrothman.bsky.social

10 months ago

This macro underwater photo shows a delicate porcelain crab tucked into the ruffled folds of a sea pen, a soft-bodied colonial marine animal. The sea pen’s structure resembles a ribbed leaf or feather, with soft polyps along the edge. The crab’s flattened, pink-to-purple body is perfectly camouflaged among the sea pen’s ridges, with its large claws folded beneath it. Fine feather-like appendages near its mouth are faintly visible, used for filter feeding. The lighting brings out intricate details in the crab’s texture and the soft fur-like appearance of the sea pen’s polyps. Photographer credit: Gregory Rothman, 2025

After the last image, thought I’d show some of the upper end, high rise living. #PorcelainCrab #SeaPenCrab #UnderwaterMacro #MarineSymbiosis #CommensalCrab #UnderwaterPhotography #OceanCritters #MacroMarineLife #ScubaDiving #MarineInvertebrates #GregoryRothman #photography
#uwphotography