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Crinoids are an extensive group of marine invertebrates that are part of the same family as starfish, brittle stars and sea urchins – Echinodermata.

If you're unfamiliar with horseshoe crabs, prepare for an intriguing introduction to one of the marine world's captivating species. The horseshoe crab, distinguished by its charming horseshoe-shaped exoskeleton, or carapace are living fossils that boast a history that predates the dinosaurs.

Mesmerizing Moon Jellies: The Enigmatic Elegance of Aurelia Aurita

When you think of barnacles you might think of small invertebrates stuck to rocks on a shore with a hard shell. But did you know that there are actually 900 species of barnacles!

Seahorses - Mystical marvels of the Ocean

The Majestic Whale Shark - Ocean's Colossal Beauty

Kelp: The Hidden Treasure of the Ocean

Whilst it appears to be inactive and harmless, it’s actually quite the opposite; this animal is not to be taken lightly…

Jellies are one of the weirdest sea creatures, with only 5% of their bodies made of actual ‘stuff’, yet they’ve managed to survive over 600 million years. They have a mysterious vibe, so I think it’s time we understood more about these fascinating organisms.

The blue whale’s lunch consists of a swarm of krill, each individual around the size of your finger. These 30m long mammals and their tiny prey seem to be the ultimate contradiction, but in fact krill make a very efficient food source for these majestic whales.

When is an eel not an eel? When it’s electric! Check out Now You Know! A feature from one of your fellow Young Marine Biologists, Matilda Jenkins.

With its alien anatomy and curious behaviour, the octopus is a wonderful mystery we’ve yet to truly understand.

Sea slugs are a hugely diverse group of organisms, not least in appearance, so let’s find out about some of these fascinating animals and just what they’re capable of.