Shark

**Sharks** are available in every world in the game, considering they're the central focus. They become available for purchase once you have at least 5 fish. Their description is "Recruit a shark to help catch more fish."

## Career Path

Sharks have the option of becoming Science Sharks once you have at least 1 shark and 20 crystals, or Diver Sharks once you have at least 1 shark in Shrouded worlds. In most cases Science Sharks are the first method available for obtaining science and unlocking the laboratory.

20 Crystals
 Diver Shark | 1 Shark
30 Fish
+0.5 Jellyfish

## Laboratory Research

There are 4 generic upgrades that can be researched that are specific to only sharks, 2 generic upgrades that affect shark income, and 5 upgrades that affect shark technology. The research listed below is available in every world and has an effect on sharks and their jobs:

The following research is available only in worlds with eels, Frigid worlds and Abandoned worlds respectively:

There has to be a way to harness the powers of some of the eels. We all know they have powers. Painful ones.
Sand digger power x2
Auto-transmuter power x2
Skimmer power x2
Purifier power x2
Heater power x2
 Environmentalism
So the machines might be destroying the ocean. We need to fix this.
 Thermal Conditioning
We're freezing to death! Machines make heat, right? We need to work on this!!

## Story

Warning: This section includes speculation, as canon answers don't yet exist.

```
To hunt. To catch. To win.
```

Sharks are not the smartest creatures, but they have plenty of determination and can be found in every world with a gate. They turn out scientists early on but advancements come slowly mostly because, as the log notes, the majority of their research is done with their mouths. Science sharks have seemingly endless curiosity though, considering the lengths they go to investigating even the hated dolphins.

The feud between the sharks and the dolphins begins with the realization that they are essentially the same, but dolphins have bigger brains. The dolphins don’t help the matter with their superior attitude, but the basis of their dislike for each other is that jealousy. The sharks manage to get along well if every other species they meet.

## Species List

* blacktip reef shark
* blue shark
* bull shark
* cat shark
* crocodile shark
* dusky whaler shark
* dogfish
* graceful shark
* grey reef shark
* hammerhead shark
* hardnose shark
* lemon shark
* milk shark
* nervous shark
* oceanic whitetip shark
* pigeye shark
* sandbar shark
* silky shark
* sliteye shark
* speartooth shark
* spinner shark
* spot-tail shark
* mako shark
* tiger shark
* tawny shark
* white shark
* zebra shark

## Trivia

Sharks have multiple rows of teeth that continue to grow constantly throughout their lives. These teeth move forward over time until they eventually fall out and are replaced by a corresponding tooth from the previous row. These rotating teeth work like a conveyor belt, ensuring the shark always has at least one full set of teeth to use.

1. ↑ Laboratory: Dolphin Biology
2. ↑ Laboratory: Cetacean Awareness
3. ↑ The Conversation: How sharks could help us regrow our own human teeth