This document discusses the conditions that affect marine life and outlines the different types of organisms that make up the marine food chain and ecosystems. It notes that plankton are the base of the food chain and that marine algae come in many species found in all oceans. It then lists and provides brief descriptions of invertebrates, fish, reptiles, seabirds, and mammals that inhabit the world's oceans.

1. Íria Cabra
Ainoha Martinez
Maria Pérez

2. The conditions of marine
life are given to the depth,
climate and ocean currents.

3. Plankton are microscopic organisms, plants and
animal are the base of the marine food chain.

4. Marine algae are plants of the sea. There are
many different species ,and found in all the
oceans.

5. • Invertebrates
• Fish
• Reptiles
• Seabirds
• Mammals

6. • There are a lot like jellyfish,
corals, crustaceans…

7. • We found fish from the surface to
grat depths. There are many
different types and sizes.
Example: shark, cod, sardines…

8. • Also found in sea turtles, sea
snakes, marine iguana… almost
all are oviparous and need to
return land to lay eggs.

9. • Bird species are adapted to the
marine environment. Albatross,
penguins, gulls…

10. • Most mammals turned his legs into
fins for adapt the marine
environment. There are different
types: seals, whales, dolphins, sea
otter, white bear…