7 Ocean Creatures to Get You in the Halloween Spirit

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Guest Blogger

Halloween is the time of year to celebrate all of the interesting, weird and creepy beings from around the world. The ocean is particularly abundant in unique-looking organisms. Ranging from the deep sea to shallow waters, the ocean is full of creepy creatures with some amazing skills – and here at Ocean Conservancy, we love them all. That’s why, this Halloween, we gathered some of our favorite eerie ocean animals to celebrate this spook-tacular holiday.


This frogfish looks a lot like a zombie from The Walking Dead. They may look slightly scary but are accomplished walkers. Frogfish are well known for their use of pelvic and pectoral fins to launch themselves across the ocean floor.

Gulper Eel

This terrifying creature has an overbite even an orca-dontist couldn’t fix! Though its large mouth looks a little off-putting, the enlarged jaw allows the gulper eel to consume a wide-variety of prey ranging in size – from a small snack to a large feast.


Octopuses are notoriously good at hide-and-go-seek. Their camouflage allows them to change color and texture to hide from any impending danger. You may never know if an octopus is lurking in the depths.

Giant Japanese Spider Crab

It’s essentially a giant spider that lives in the ocean, who wouldn’t be afraid?! But all jokes aside, the giant Japanese spider crab is awesome. With a leg span able to reach 15 feet, these crabs are some of the world’s largest crustaceans.

Divided Flatworm

This invertebrate makes our list due to its coloring. Divided flatworms can grow over 2 inches in length! They may be small but the award for greatest Halloween spirit goes to this divided flatworm.


If you are afraid of sharp objects, stay away from the sawfish and its protruding weaponry.  Their saw helps them detect electric pulses produced by their prey. These scary looking rays mainly eat fish and crustaceans – watch out giant Japanese spider crab!

Sarcastic Fringehead Blenny

The bulbous, outward-facing eyes of the sarcastic fringehead blenny make it look like a something out of a scary movie. These fascinating-looking fish are known to participate in some very interesting behavior when defending neighboring territories – I wouldn’t trick-or-treat near their house.

Our work is focused on solving some of the greatest threats facing our ocean today. We bring people, science and policy together to champion innovative solutions and fight for a sustainable ocean.
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