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What has no heart and no brain? No, it’s not your ex… it’s the barrel jellyfish (Rhizostoma pulmo). Also known as the dustbin-lid jellyfish (yes, really), this species can reach an impressive 35 in (90 cm) in diameter and can weigh up to 77 lbs (35 kg)! Like other jellies, this critter relies on its nervous system to function.

Photo: tato grasso, CC BY-SA 3.0, Wikimedia Commons

Gastric cancer patient with bone marrow metastasis #oncology #cancer #laboratory #diagnostics #oncologia #microscopy

Caenorhabditis elegans

Photo credit: Unknown. All earliest source links (circa 2008) are dead.

Different species of Euglena found in pond water. They are either green, red, or a mix of both and usually have a visible red eyespot. 

Photographed by merismo

Church of Whale Fall

Leaf epidermis under dark (top) and light (bottom) condition. Stomatal openings seen on both picture.  

regular lobsters start out as just little lobsters but spiny lobsters start out as these beautiful weird larvae that also evolved to ride on top of jellyfish. This jellyfish is too small though!!!