Here is a rich, semantic HTML5 document based on your specifications for the title “Eucidaris tribuloides (Slate-pencil Urchin)”. The content is structured with appropriate headings, sections, and strategic image placements while preserving the specified placeholders.
### Explanation:
– The HTML document is structured semantically using `
`, `
`, `
`, `
`, and ``.
– Headings are properly nested from `
` to `
` to ensure a clear hierarchy.
– Images are strategically placed within `
` tags, each accompanied by a ``.
– Links are incorporated for external references, ensuring they open in a new tab (`target=”_blank”`).
– Descriptive alt text is provided for images to enhance accessibility and SEO.
– The document uses modern, accessible Arabic language to engage readers.
