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13 votes
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What is the name of this creature?

Nautilus. Nautilus belauensis. Licenced under CC ASA 3.0 unported, via Wikipedia 2022 from user Manuae. Mollusca -> Cephalopoda (like squid and octopus) -> Nautilaceae -> Nautilidae - ...
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11 votes

Found this under a rock at the beach, removed it carefully and couldn't find any other bones, must be a marine mammal of some sort

A reasonable match for many features, bearing in mind the incompleteness of the skull is that of the South African Fur Seal (AKA. brown fur seal, Australian fur seal).: Carolyn Stewardson, Tania ...
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7 votes
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What is this marine creature? Is this a fossil?

Its not a fossil. It is just shells of various marine invertebrates that get stuck together as they grow. It looks like worm-snails on a a large piece of clam shell. the little holes in the clam shell ...
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5 votes
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Which organism has the sharpest vision?

A good measure for "sharpest vision" is known as acuity of vision. Visual acuity denotes the ability to perceive detail and resolve temporal motion. This metric informs how sharp or blurred ...
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  • 389
4 votes
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What types of spider and caterpillar are these, and what are they doing?

The spider is a cobweb weaver - family Therididae (can be determined from the bulbous abdomen, thinness of legs and small cephalothorax) and appears to be Steatoda triangulosa from the brownish colour,...
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  • 1,606
4 votes

What types of spider and caterpillar are these, and what are they doing?

Spiders pump digestive enzymes into the prey to externally digest it then drink it, whereas you ingest your prey and the digestion is done internally. That's not even the only way animals eat......
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  • 771
4 votes

Seasonal fur shedding

Their seasonal (colour) moulting is controlled by pituitary hormones, including prolactin, melatonin and alpha-melanocyte stimulating hormone (α-MSH), together with glucocorticoids, gonadal steroids ...
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  • 251
3 votes
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Do cheetahs compete with lions?

Yes, cheetahs do compete with lions. Cheetahs can share the same habitat with lions; however, they actively avoid lions (and also hyenas and leopards). They are smaller carnivores/predators than their ...
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  • 1,113
1 vote

Do cheetahs compete with lions?

Although the bulk of the explanation is done in the other answer, my answer will focus on the observations in Serengeti national park and the studies made. Lions in fact kills cheetah cubs. In the ...
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