How Jellyfish Survive (& Thrive) Without A Brain Or Heart

Jellyfish. An ancient, sea dwelling, ‘stinging machine’ located in the majority of the worlds waters, in infinite numbers, have no brain or heart to keep them alive…true or false? TRUE! Jellyfish have no brains but don’t worry, we’ll explain all about their unbelievable nervous systems and anatomy later. Let’s start with understanding what they are … Read more

No Brain? For Jellyfish, No Problem

Jellyfish: Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Kingdom: | AnimaliaPhylum: | CnidariaSubphylum: | Medusozoa Jellyfish include any planktonic marine member of the class Scyphozoa (phylum Cnidaria), which is a group of invertebrate animals … Read more

How the jellyfish revolutionised brain science

Often in science, being curious and asking simple questions can lead to amazing discoveries. One such story began in the 1960s with a scientist, Osamu Shimomura, asking the question: what makes a jellyfish glow? Shimomura was able to identify the particular protein—which he called green fluorescent protein (GFP)—from the jellyfish Aequorea victoria that produced its … Read more

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Do Jellyfish have Brains? (How Jellies Hunt and Kill without Brains!) – BioGeoPlanet

As a biologist, I’m fascinated with one of the most successful creatures on our planet – the jellyfish. Let’s take a closer look at how they manage to survive… even when it seems they do not have a lot going for them!! Jellyfish do NOT have brains (or bones, teeth, blood…or even hearts). Instead, they … Read more