Is this different and rarely known?
1. Octopus
These eggs are clustered, transparent, and usually attached to rocks, coral, or reefs. A single female octopus can produce up to 200,000 eggs, each about the size of a grain of rice.
What is touching is that the mother octopus guards her eggs for 53 weeks and will die soon after the eggs hatch.
2. Giant water beetle
This beetle lays its eggs on the back of the male until they hatch.
These eggs will hatch within 1-2 weeks.
3. Suriname toad
The embryo will implant in the skin and emerge from the mother's back as a small frog measuring 2.5 cm. After hatching, the mother's back will appear hollow.