## All Together Now! ### Flocking, Herding and Collective Behaviour in Nature #### Tom Hodgson, MIGSAA ##### 12/02/2020 <small> Supervised by Michela Ottobre & Kevin Painter</small>

Pros	Cons
Easy to code	Calculating interaction can be slow
Intuitive	Difficult to simulate large numbers...
Information on individuals

<img src="murmuration.jpg" alt="murmuration" width=800x/> <!--  --> $$\mathcal{O}(10^3)$$

<img src="herring.jpg" alt="herring" width=800x/> <!--  --> $$\mathcal{O}(10^6)$$

<img src="krill.jpeg" alt="krill" width=800x/> $$>\mathcal{O}(10^9)$$

An advection-diffusion-reaction model for the estimation of fish movement parameters from tagging data, with application to skipjack tuna (Katsuwonus pelamis). Sibert et al. (1999).

Efficiency of island homing by sea turtles under multimodal navigating strategies, Painter and Plochocka, (2019)

Pros	Cons
Simulation is quicker	Difficult to code/solve
Opens up tools from analysis	Can't represent individuals
	Restrictive assumptions

Our Model