LIFECYCLE OF A BUTTERFLY

TYPES OF MOLLUSCS

HYDRA VIRIDIS

Hydrae are the only cnidarians that live in freshwater, they are very small and they are always polyps.

JELLYFISH BIRTH

In this video you can see how jellyfish are born asexually by budding (polyp), they are born as ephirae and they quickly become medusae. Medusae reproduce sexually (male and female gametes). This completes the lifecycle of the jellyfish.

CORALS EATING

In this video you can see how corals are artificially feed, corals are cnidarians and they only have the polyp body shape.

PHYLUM CNIDARIA: ANEMONES

HOW DO SPONGES EAT?

As you should know sponges are filter feeders, they move water around them ( with the help of choanocytes) to get nutrients from it. You can see the evidence in this video.
Sponges are the simplest animals on Earth and they constitute the phylum PORIFERA.