Marine Curio

DIVE Magazine's long-running Miscellany of Marine Curios - the weirdest and most wonderful critters that call the oceans home
Marine Curios #22 Blanket octopus, Tremoctopus spp.

Marine Curios #22 Blanket octopus, Tremoctopus spp.

ByDIVE StaffFeb 19, 2026

Drifting through tropical open ocean, the blanket octopus is famed for its extraordinary size difference between the sexes and its…

Marine Curios #21 Hooded or lion nudibranch, Melibe leonina

Marine Curios #21 Hooded or lion nudibranch, Melibe leonina

ByDIVE StaffJul 13, 2025

The hooded nudibranch, also called the lion or lion’s mane nudibranch, is a voracious hunter that swallows its prey whole…

Marine Curios #20 – Sailor’s Eyeballs, Valonia ventricosa

Marine Curios #20 – Sailor’s Eyeballs, Valonia ventricosa

They look like unremarkable polished stones but sailor’s eyeballs are actually one of the most unique organisms on the planet…

Marine Curios #19 – Torpedo Ray, Torpedo spp.

Marine Curios #19 – Torpedo Ray, Torpedo spp.

ByDIVE StaffMar 8, 2025

‘Numb, sluggish and lethargic’, the torpedo ray wasn’t named after the naval weapon but by the ancient Romans, whose physicians…

lamperts sea cucumbers crawling over an elephant ear sponge

Marine Curios #18 – Lampert’s Sea Cucumber, Syanptula lamperti

ByDIVE StaffFeb 9, 2025

It only eats one flavour of sponge, and it feasts so voraciously that Syanptula lamperti’s dinner takes less than an…

Marine Curios #17 –  Argonaut, or paper nautilus

Marine Curios #17 –  Argonaut, or paper nautilus

ByDIVE ContributorsDec 28, 2024

Named for the sailors of Greek mythology, argonauts – also known as paper nautili – are a unique group of…

a picture of a red disco clam

Marine Curios #16 – Ctenoides ales or disco clam

ByDIVE ContributorsOct 27, 2024

It was given its name for its flashing light display, but Ctenoides ales – the disco clam – is more…

a 3d rendering of a giant oarfish with its huge red crest

Marine Curios #15 – Regalecus glesne, or giant oarfish

ByDIVE ContributorsAug 10, 2024

The subject of marine myths and sea serpent legends, the misnamed giant oarfish doesn’t actually row itself anywhere. This giant…

A picture of a yet crab, Kiwa hirsuta, with its long 'hairy' claws

Marine Curios #14 – Kiwa hirsuta, or Yeti crab

ByDIVE ContributorsJul 13, 2024

Kiwa hirsuta or Yeti crab – prefers it not too hot, and not too cold, but just right, down there…

Marine Curios #13 – Marrus orthocanna, a pelagic siphonophore

Marine Curios #13 – Marrus orthocanna, a pelagic siphonophore

ByDIVE ContributorsJun 8, 2024

Marrus orthocanna – a deeper, darker, colder relative of the Portuguese man o’ war but with much less of a…

Marine Curios #12 – Clione limacina, or naked sea butterfly

Marine Curios #12 – Clione limacina, or naked sea butterfly

ByDIVE ContributorsMay 4, 2024

Clione limacina, the naked sea butterfly, sounds like an angelic little creature… that eats its relatives! The naked sea butterfly,…

Marine Curios #11 – order Xiphosura, or horseshoe crabs

Marine Curios #11 – order Xiphosura, or horseshoe crabs

Horseshoe crabs are living fossils threatened by a unique usefulness to human science (and they’re not related to crabs) There…

Marine Curios #10 – Pseudocolochirus violaceus or sea apple

Marine Curios #10 – Pseudocolochirus violaceus or sea apple

ByDIVE ContributorsMar 17, 2024

Pseudocolochirus violaceus – a cucumber shaped like an apple with an unpleasant mode of defence and which breathes through its…

a picture of a shuttles hoppfish, also known as the mudskipper

Marine Curios #9 – Periophthalmus modestus or Shuttles hoppfish

ByDIVE ContributorsMar 3, 2024

Many land animals enjoy jumping out of the water, Periophthalmus modestus is a fish that enjoys jumping out of it…

a picture of the pelagic red crab, or tuna crab, Grimothea planipes

Marine Curios #8 – Grimothea planipes, or the pelagic or red or tuna crab (or langostilla)

ByDIVE ContributorsFeb 11, 2024

The pelagic red crab, Grimothea planipes, is a species of squat lobster, and possibly one of the most important crustaceans…

Marine Curios #7 – Pelagothuria natatrix or pelagic sea cucumber

Marine Curios #7 – Pelagothuria natatrix or pelagic sea cucumber

ByDIVE ContributorsJan 28, 2024

Once mistaken for an unknown species of jellyfish, Pelagothuria natatrix has a much more unusual heritage Despite looking a lot…

Marine Curios #6 – Ambystoma mexicanum, axolotl or Mexican walking fish

Marine Curios #6 – Ambystoma mexicanum, axolotl or Mexican walking fish

The strangest fish in all of Mexico – the axolotl – isn’t actually a fish at all, but that’s just…

Marine Curios #5 – Mitsukurina owstoni, or goblin shark

Marine Curios #5 – Mitsukurina owstoni, or goblin shark

ByDIVE ContributorsJan 5, 2024

The rarely-seen goblin shark is one of the oldest fish in the sea, living in the deep darkness of its…

Marine Curios #4 – Glaucus atlanticus, or blue angel/dragon sea slug

Marine Curios #4 – Glaucus atlanticus, or blue angel/dragon sea slug

There’s very little angelic about Glaucus atlanticus, the blue angel sea slug Blue it may be, but there’s little to…

a tongue-eating louse pictured inside an anemone fish

Marine Curios #3 – Cymothoa exigua or tongue-eating louse

ByDIVE ContributorsDec 4, 2023

One reason to be grateful you’re not a fish – the spine-chilling Cymothoa exigua, or tongue-eating louse Finding Nemo could…

Marine Curios #2 – Nereis sandersi, a deep ocean worm

Marine Curios #2 – Nereis sandersi, a deep ocean worm

ByDIVE ContributorsNov 25, 2023

Lurking deep within the bowels of the earth – quite literally – is Nereis sandersi – a deep ocean polychaete…

a juvenile Periphylla periphylla or crown jellyfish

Marine Curios #1 – Periphylla periphylla, or helmet jellyfish

The first in DIVE’s Miscellany of Marine Curios – Periphylla periphylla, the helmet jellyfish The helmet jellyfish (Periphylla periphylla), is…

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